I stay home with my 3 kids, and trust me, the first year I had 3, we managed to get it all done... plus sell our house and move to a new home... I sometimes look back at that year and wonder how we did it! The first few months though, you need to just focus on the basics, food - laundry - cleaning bathrooms/kitchen.
It will get easier - right now my two youngest are playing independently (and I'm supposed to be paying bills...). My kids are 2, 4 and 5 and I have a pretty flexible (but pretty standard) schedule now that I have one in K and one in preschool.
We get up at 7:00.
Breakfast until 8:30.
Kindergarten child gets on bus at 9:00 - then I take my 4 year old to preschool (2 mornings a week).
Once I am down to one child, I run errands. Do grocery shopping. If I don't have errands, I spend time cleaning places in the house that are easy to do with one kid around (she plays in her room, I clean a bathroom, etc.).
Kindergartener comes home at 12:00. Preschooler gets picked up at 12:15. Lunch starts asap after we are home and usually done by 1:15. My 2 year old takes a nap (sometimes) or has quiet time for an hour.
My boys are expected to play outside (or on their own in the basement) for a while after lunch.
We have book time, library time, go to the YMCA, and baking time in the afternoon (depending on the day - we do different things). I start dinner prep at 4:30. Dinner is at 5:45 - bedtime starts at 6:30. Everyone is in bed by 7:30.
After bedtime I clean up the house, do laundry, prep for the next day. Make a list, etc.
By 9:00 I am on my butt with a glass of wine :)
I usually schedule a few hours to clean on the weekend so my husband can play with the kids.
I can get a lot done in an hour with just one kid (when the boys are at school). I can also get a lot done when they play by themselves (which happens more and more lately).
For sure a meal planner will help. I find that if I don't have to think about what is for dinner, it makes my afternoon go MUCH better.
Also - having less in your home makes it easier to clean. Less clothing is less laundry. Less clutter is less dusting. Take a space at a time, and declutter and donate what you don't need. We did this when we moved and it really made a huge difference for me.
Good luck!
J.