This is just my opinion. If those girls were in MY collection, Akina would be the only one I'd consider this season. I'd give the rest another year. I wouldn't try to push them to put on enough weight to go this year.
There's size and then there's maturity. I've got some '06's that are technically the right weight to go this year, but I'm thinking of holding them back yet another year for more weight and body condition.
It's just not worth it to me to push my girls to breed just because they are close to or right at breeding weight and not consider other variables as well.