The best Safari I can think of for your situation would be the Safari 25C, the 6 sleeper. This would fit you, the kids and the gear very comfortably.
http://www.airstream.com/trailers/20...loorplans.html
Also, check out this link from a previous post:
http://www.airforums.com/forum...ight=safari+LS
Your 1/2 ton Suburban should be able to pull this. I would suggest that you look into the cooling system, and gearing. Also make sure you have the right hitch setup and brake controlers.
I don't know what this unit costs, but I would guesstimate it to cost in the mid 30s.
Anyone know for sure.
Regards,
Eric
Eric