Also, has anyone successfully put a miniature deep freezer in their TT?
I have in a 34ft Terry..It will depend on your floor plan where and if it will fit.As far as fulltiming,I have in as small as an 18ft Ideal to a 35ft Jayco(RV wise) and in between about every size made.Again,floorplan is the key.Spent 7 years in a 24ft Beaver class C with three of us and animals with a Mazda pickup in tow.
Our family includes six kids the wife and I but I have never had everyone fulltiming with us at the same time.Usually it was three of us a dog and a cat which worked well,all eight would not have worked well gageing by the times all were present and just spent a night or two.
Closet/cupboard space is also important as well as the storage under the bed and dinette set.If your wife is happy with either setup for long term,then everyone else will be also for fulltiming.
I like fulltiming and would not hesitate to do it again,it just takes planning and how to use the space available the best way and things you do not "have to have" don't go.