Welcome to the Forums. We're glad to have you with us.
There's a lot of good Airstream information here to help you make an informed decision. Airstreams are not cheap, but generally worth the price paid.
Based upon your stated plan, you're probably going to want something in the 25'+ range.
SuEllyn & Brian McCabe
WBCCI #3628 -- AIR #14872 -- TAC #FL-7
2015 FC 25' FB (Lucy) with HAHA
2005 Suburban 2500 Quadrasteer (Olivia) & 2011 Silverado 3500 (Fred) with Outfitter Truck Camper (Ethel)