have been sailing a few times with friends and been crew for a couple Great Lakes races
and you are thinking of jumping up to 48 - 55 foot cat. On an Atlantic 55 the main is 933 square feet. That is a lot for two people to handle. The genoa is almost as big. OK if things are going well but if anything goes wrong you will find it pretty daunting.
Why so big? Do you intend to have crew? I am not trying to put you off but the loads on a big cat are scary and stuff breaks so you have to go and wrestle with things from time to time.
I have seen quite a few couples with bigger boats and it is noticeable that they often motor rather than sail and if they do sail they are strangely reluctant to raise the main.