Im going to throw a huge spanner in the works here and suggest that you rethink investing in a capsule. Particularly if you are small build and dont think you will be able to handle the weight and size of a double pram. I am small build and for #7 i got a capsule, should never have done it, i couldnt carry it, it was too heavy and my legs are too short to get it off the ground far enough. Needless to say i sold it before baby was 4 mths old and it had barely been used. I have 7 and i hadnt had a capsule until then and if im lucky enough to be blessed with another i wont buy a capsule again.

I recommend investing in a double pram, one of the babyjogger range or similar