We did what you are describing but we bought and towed a full sized Extended length Chevy Van. The Van held everything we needed and if we wanted extra for the show we had that inventory shipped to the show location. If the the show will not accept your inventory, most local UPS stores and similar locations will accept it for about $5/box. My boxes were over 125 pounds and it was still $5/box.
60,000 miles a year on an RV is going to crash the value of the coach unless you plan to keep it forever (my plan for my RV with 350,000 miles) but you may be able to cut the number of miles traveled if you can go from one show to another. I spend over 12 years full time going from RV show to RV show and never returned home but some shows were 1000's of miles apart. It was great and I highly recommend it.
