Space is always your friend in a boat bulding shop. The narrow part of the kitchen is 41 inches wide and your boat will be about 24 inches wide. That leaves 17 inches to squeeze by on ONE side and nothing on the other. I think most builders would agree that the ability to walk around the boat is important.

Another consideration is that I wouldn't want to use the kitchen for food preparation during the building process. Sawdust, fiberglass and epoxy don't mix well with anything I'd want to eat.

If you could use the living room, and it was a better work area, you could seal off the doorways with plastic drop cloths while you were working and keep the rest of the apartment relatively clean.

Another possibility, if the kitchen is up for remodelling next. Gut the kitchen now if it would give you more space, build the boat, then rebuild the kitchen.

All in all, I'd try to beg, borrow, or gain squatter's rights to a garage or a corner of a warehouse and build there, even if it meant coping with having to heat the space.