If you choose trailer, check Craigslist for a used boat trailer. You can pick them up for $200 - $400. Already licensed and ready for mounting. Another option would be to build it on large wheels/tires like the Yoder 1500. If you ever had the need to take it with, load it on a trailer and go.
"Hi, my name is Gerry and I'm a "BBQ'aholic" and I'm here for help...