BIg hugs coming your way! You were in my DDC
My boys were born 12/29, so I know where you are at in terms of how much care they still need all the time. I have 2 older girls that are 21 months apart, though, and I wanted to tell you that your twins are going to chance SOOO much in the next 6 months! They will be much more independant. I got PG w/ Laina when Lacy was 12 months old, and she was a high-needs kid (still is). Laina was teh most peaceful baby! She's still really laid back! When I was first PG it was hard to think of how I would care for both of them, but by the time Laina was born Lacy had grown soooo much! Your girls will be changing a lot in the next 6-8 months. By the time you have the next set of twins, they will be playing more by themselves, able to eat by themselves, dress themselves and they will also be minding much better! Really! I'm not saying it won't be hard, but I don't think it will be as bad as you think it will
You have several months here to come up w/ a good routine to get them on (we are working w/ my boys on this now, going to bed w/o nursing, just laying down in the bed w/ them), figure out the whole snack thing (they will be able to have sippys and snacks while you care for the other babies, you can teach them to do a lot of things in the next few months! You CAN do this!!!
One of the girls on my DDC on the Twins Magazine website got PG when her twins were just a few months old! They were born 1/9-08, and the new baby was due 12/29/08, but was actually born 1/9/09, so she had 3 kids within one year! All born on the same date! Another girl I know IRL had 2 older kids, then a set of b/g twins, then another set of b/b twins when the first twins were 2! It does happen
(and thanks for the wake up call, we have not been using any BC b/c I have not cycled yet)