I'd personally suggest a trawler
for liveaboard. My wife and I are relatively young (28 and 27) and we bought a 37' trawler
about a year ago. When we moved up from Florida
recently, the brought the boat up with us. It was a quick and tiring adventure. Your budget should buy you plenty of boat. A couple of things that I will state are based on my personal experience so take them for what they're worth.
A separate stall shower
is highly recommended as it allows you to shower
on the boat easily instead of walking up to the facilities.
Our boat came with two OLD ac units. I replaced the two with a single
modern reverse cycle unit with traditional programmable thermostat. It's a Mermaid Marine unit. We love it.
We have a "no number 2" policy on the boat and our 25gal holding tank
gets us about 2.5weeks between pumpouts. Use that as a rough gauge for holding tank capacity.
out any boat based on a few preconceived notions that you might have. A 36-40' sportfish could make an excellent liveaboard and some can be had cheap
People live on just about any type of boat imaginable. The more you look at, the better idea you'll have of just exactly you want. I'd shop in a price
range that left you with enough money to replace things and upgrade as necessary. Things WILL break no matter what the age and you'll need to have money to fix them. In addition to having to replace the air conditioning
on our boat, I currently have two of our fuel tanks
out to get fixed as one sprung a leak and the other one isn't far behind.
Good luck to you and don't be afraid to askfor opinions on potential boats.