Its so hard deciding what to do hey.

If I were in your position I'd leave DD1 in the carseat she has been used to for ages and get a capsule, I wouldn't bother buying one I'd just get one from the Ambo's ($68 odd for 6 months, I pick mine up today lol) as selling one you bought again you'd lose too much money to be worth it.

I found the capsule handy for when we'd been out and coming home bub was sound asleep, I'd just take her in and let her sleep till she woke up. Then I could get DD1 in the house and settled before worrying about DD2.

Once D?2 is ready for a carseat (still in rear facing possie after 6 months when the capsule has to go back) I'd get a booster (depending on how big your DD1 is, either a 5 point harness one or just a normal booster with a detachable harness) and put D?2 rear facing in DD1's carseat...........Then depending on when you want to change your D?2 into forward facing you can decide then to buy a new carseat or just turn the original car seat forward facing.

Hmmmm I so hope this makes sense lol. I'm thinking of the most cost effective way of going about it all, I'm in the process of trying to fit 3 in the car, and the carseats are too blooming big for my car!!!!!

Anyway, lol hope you figure something out.

Cheers,

Beck