Have you seen the trailer? Make sure you do as it's pretty small with a little one. We've got a 20'er which means the living quarters are 16', works fine for the 2 of us as long as we don't get 3 or 4 days of rain, we usually head home if we do. Being in Ca. this may not be an issue. If you had a bigger TV I'd suggest something with a bump out to give wee one some room but that's not an option.
So yes the 183 or the 19 as Dan suggests will work for you, you'll have a more open feel with the 183 as well as extra room when Mom doesn't travel with you. The 19 gives you the couch, which is a big plus, but a more cramped feel. Think you'd be best off actually visiting the 2 to decide, if possible.
The truck should do "okay" with either, at 290 HP you should be alright. The hitch weight should work out too, roughly 500 lbs loaded up. I ran into rear end sag issues on my old Ranger, had to add Air-Lifts to it, but you won't know till you hook it up.
Go for it but do keep in mind it's a slippery slope your getting on.
