I’m feeling excatly the same Queenie!! I’ve got my op in 3 wks & can’t decide between 400 or 450??? I’m have choose 400 but keep thinking they are not going 2 be big enough… Then think 450 will be 2 big…. 
I’m a 34b 5ft6 size 10, went up 2 DD/E when pregnant/ breast feeding & loved them.
Awwwww what do u think I should do girls?? Please help Xxxxx