Seperate A/C for the bedroom. I have an Alfa basement air. Does NOT push far enough to get the bedroom cool. I carry a portable A/C (roll around kind) for the bedroom, can just about make it snow if I want
Mine can run 30 amp or 50 amp. I also recommend 50 amp, BUT not all parks have 50 amp. A lot of ralleys (also a Good Sam Member) are in fairgrounds and you are lucky if you get a good 30 amp service.
Kudos on the black tank flush system, definitely.
Disc brakes if you are towing in the mountains alot or are pretty heavy.
BRAKESMART Controller (here come the controller wars

)
Look at the axles and tires. Make sure the tires can support the trailer loaded. You would think the RV mfgrs would chose smart, but they have a bottom line to watch. I had the Alfa axles flipped to give me more road clearance (+6"). A lot of Alfa's had very bad experiences with Carlise tires. I do not have Carlise's, but I would not want Carlise's either.
Look at the truck and make sure it can start and STOP the RV. Exhaust brake?, Stick? Auto transmission with lockup system?
IF you want slide "toppers" (sliding covers for the slides) some mfgrs do not put the reinforceing structure in for them UNLESS you order this option when it is brand new, ie you can not add them later and have the sidewall structure that will attach them correctly.
The new Alfas use 3 20# propane tanks instead of of 2 30# tanks. Reason is you can get a 20# swapped at Home Depot, WalMart, convience stores and the tank is not so awkward and heavy. Pricey to swap it at HD, WM etc, BUT if you HAVE to you can.
While you are traveling can you stop at a rest stop and get to the refridgerator?, get to the table to eat lunch, get to the bed for a nap?, get to the potty? (wait till you travel with grandchildren or pregnant women), without puting out the slide(s).
I have a equipment slide in mine that the equipment slide is on rollers. Nice, but limits storage to the slide, and you lose probably 6" on either side of the slide because the slide has to be able to move and not get caught. If it did not come with a slide I would not have gotten one.
REWIRE the brakes as soon as you pick it up. The mfgrs wire the brake wiring with plain ol wire nuts. There are self sealing wire nuts now (Lowe's, Home Depot). Same wire nuts but they have a resin glue in them that seals them from moisture (ie corrosion). Grease the axle piviots early in your ownership. Check the running gear (axles, brakes, wiring, shackels, tires) frequently. The whole RV is depending on them to keep the shiney side up.
A bugaboo I have had is getting the refridgerators to light (gas) after it sits a while with the gas off. What I do is light a stove top burner (or what ever is downstream from the refridgerators on the gas line) first. That will ensure the refridgerators have a gas supply and not air in the lines. Then I found out the ignitors on the gas ignition on the refridgerators were not sparking after about a year. The ignitors depend on the gas tube they spark to is GROUNDED. I ran a seperate ground from the gas tube to the common ground point of the refridgerator electronics and it works like a champ now.
We found nice ACRILIC glasses at Crate & Barrel (shopping mall store). They do not break and look nice.
That's about everything I can think of to help you on your way.
Bob Weis
I looked back at the thread. I agree with being leary of an Alfa. They are either good or a real headache. Mine has been good. The basement A/C can be a GIANT PITA. Works for us, but. I would stick with the conventional roof mounted units, but one for the bedroom (or some way to absolutely control the temperature there. If you do not sleep well in the Rv, you will not like it regardless).
edit - In our Alfa the livingroom TV was on a shelf that would not support its weight going down the road. On the Alfa owner thread several TV's had fallen off

. I put colonial table spindle legs under the TV shelf (from Home Depot) to properly support the TV. ie check the TV shelf for good weight bearing construction and the TV is STRAPPED in for travel.