Good for you for educating yourself! This is the single best thing that you could do. Talking with other Mom's and reading websites for information is the only true decision to make. From there, you will find the best answer for you and your family.
I will share with you, though, that our decision was to vaccinate but on a delayed schedule. With my son, he was my first, we did as we were told and didn't think anything of it. This was 5 years ago and the autism rate wasn't near where it is today. Fortunately, he is a bright boy and had no ill effects.
With my daughter, however, we have delayed things quite a bit. There were some concerns early on about her brain development, both in utero and out of utero and this caused me to be even more careful with her. She is also developing at a different rate than my son did and what a lot of children her age are developing...at least outwardly. She is very social but isn't walking yet and refuses to "show" us what she knows. She is 17 months and while I am confident that she understands more than she lets on, she hasn't demonstrated much on command. Anyway, giving her shots that could potentially cause problems is not the direction that we have chosen for her.
There are a couple of key points that you should realize through your research.
1) The autism rate for boys is much higher than it is for girls. That you have a boy should play a role in your decision.
2) Autism can be genetic.
3) If you plan on putting your child in daycare, at a facility, you will be required to vaccinate on schedule unless you legally fight the system. So, obviously, if you need daycare and choose not to vaccinate on schedule, you will need to look at alternatives.
4) As another poster suggested, you should strongly consider the one-at-a-time vaccination schedule. If your child were to have a problem with a vaccine, you will never be able to figure out which one caused the problem if you give more than one-at-a-time.
5) Consider spacing out the vaccines at least a month a part.
6) Consider waiting for vaccines until your little guy weighs more. I waited until my daughter was 15 pounds for her first shot. I just felt more comfortable waiting until she had a little more weight to fight the vaccine.
7) Unless your child is high-risk, I would consider skipping things like the flu shot, which by the way still has traces of thimersol in it as a preservative, which is the questionable toxin for potentially causing autism: http://www.cdc.gov/FLU/ABOUT/QA/thimerosal.htm
8) If you do decide to vaccinate, you should ensure that the bottles of the vaccine are shaken. Preservatives float to the bottom and IF it's a multi-use vaccine, you don't want your child getting the bottom of the vial vaccine...i.e, mostly preservatives.
9) Many people are questioning whether or not children need booster shots. It is my understanding that parents can request a blood test (usually out of pocket) to test whether or not the booster is needed.
10) When we were little, we only got about 16 shots. Today kids are getting about 30. The idea that we all were vaccinated and we are all okay doesn't really compare. Our kids today are getting more vaccines and on a very aggressive schedule.
11) Another questionable link to Autism is the MMR shot. In particular, the one that is given at around 18 months. Most kids are diagnosed with Autism between the ages of 2 and 3. Many parents with kids, who have autsim, believe that their kids changed after this shot and you can see how it fits.
12) Understand that the autsim rate is very high. It's about 1 in 150 kids now and this is the documented cases. While the CDC is finally considering that there is a link to vaccines and while the Supreme Court have made settlements to this effect, the end result is that there aren't a lot of resources available should your baby develop autism. Most insurances don't cover the care. Early intervention is key and there aren't a lot of facilities that can help and those that can are booked years in advance. This is a serious public health issue and so the more that you can do to help protect your little one will pay off.
I am sorry that I didn't include more links to back up my statements. If you want to talk further about this, please feel free to write and/or if you would like more information, I will be happy to send it on. Ultimately, if you have the ability, I would choose to spread out the vaccines but wait until your little guy shows who he is and what his behaviors are. Being able to tell when something is wrong as the result of a vaccine and being able to know what caused what will give you more peace of mind should anything happen. I am fortunate. We have chosen to have me stay at home with my daughter at least until she is 3. So, having to deal with the school system and their restrictions isn't an issue for us...yet.
I hope that this helps.
N.