I had twins over four years ago when my oldest wasn't quite 3 years old. It is hard, and the first year is really tough. I gave up a lot of stuff just to "simplify" my life - I got a really basic haircut (low to no maintenance) and hardly ever switched to wearing just foundation (a cream to powder). Anything to cut time here or there will help as you will be VERY busy!
My twins are four years old now and absolute joys. They always have someone to play with and it is so fun! So try to keep perspective and tell yourself "if it won't matter in 5 years, it doesn't matter now".
If you choose to work, it will be difficult - not only if you are breastfeeding, but because you will be tired and so very busy. I worked a little after they turned a year, but opposite my husband's schedule. I would recommend if you have to work, work away from home because it would be difficult to work a job in-home with the twin babies.
I fed mine both at the same time (but I bottle-fed), and I had two high-chairs. They slept for the first 4 months either in a swing or a bouncy-seat (that vibrated). We bought rechargeable batteries for the swing and seat since we used them so much. Twins are usually smaller and it helps them to be elevated so they can breathe easier until they get a bit bigger.
If you have other questions or want more info, feel free to email me! ____@____.com. I would also recommend finding your local twin moms organization and getting involved. Good Luck! It's possible!
M.