Ok on the issue isde.....i've used the Honda2000i and 1000i, BOTH are quiet, you just need to make sure you place a rubber car mat beneath them to reduce the vibration....
now for the picture side...now don't get me wrong, i wouldn't throw her out of bed for eating crackers, but i wouldn't tear my knees up asking here to stay either....as for 28 yr olds...my wife may be my age, but she STILL puts 98% of all 18yr olds to shame....me happy man...hehehehe
And yes Redheads are better

.
And i would go electric...Gas already has a storage space, finding more room for propane or some other canister....well with 5 people on board, that can get tricky...but always use a CO2 fire detector on board...always...another option is to run the alcohol stove for a bit....warms up nicely, but then again, thats an Alabama winter..sort of like a northern summer day...so i am not to experienced on that in a boat...