I have a Finch on my 09 Taco. My two cents...
1) Do yourself a favor and get airbags before you put your camper on your truck. It ill be more of a hassle to do it later with the additional weight of the camper(Its around 900 lbs with the options). It will make the drive home more comfortable too. I think I paid $300 for Ride Right airbags that were easy to install. 2) Unless you plan on taking your camper off your truck when you camp, I wouldn't bother with solar. You are getting a house battery, which will be enough to run all the workings of the camper(unless i missed something on another page that you plan on running). If the battery gets low after a week of camping, you just have to run the truck for 10-15mins to charge it up. I have never killed my battery since owning my camper. I too considered solar but someone at 4WC gave me that bit of advice and it saved me some serious cash for more sensible options. 4WC pre-wires it all anyway, so if you want solar later you can have it put in or just buy a portable solar unit from Costco or whomever...
Hope it helps...
-Scott