You know I said the exact same thing and yet here I am, make sure you get a good birth control lol.
There's so much, is there anything specific your wondering about?
My pregnancy was rough but symptom wise this time has been harder. Shoot for 34 weeks for delivery anything after that is fantastic but just expect to be early (you may not be but better to be prepared).
I will tell you don't buy two of everything (swing,bouncer,etc) only get one as it's not likely you'll use two of most things and you may not use somethings at all. One might love a swing and the other might hate it or they both might hate it. Just get what you need and don't over do it.
Try your best to get them on the same sleep cycle, at 4.5 months I got both mine on a cycle and sleeping through the night it was a life saver for me.
Side by side double strollers are great for seeing both but horrible for fitting into places. It's hard at first but it will become your normal and end up being easier.
I did find the more transitions they made things got easier (bm/formula to milk, baby food to solids, etc).
Twins are tons of fun! If you want to know something specific feel free to ask!