with out knowing some history of the round it's hard for me to say.
I bought a 25 yr old round and put some up by 25% but then they new it was low,as the other WC never ever increased the price.
Did you check out the prices before you took the round on ?
Maybe just get on with it until early march next yr then increase the price,but
it depends on areas and the likes.you must have a idea .