Don't move, do both. The free location continues to share the overhead of the bigger one. Whichever down the road flatlines in attendance or presents a liability of some nature gets the boot. This leap frog method might return big time as the bigger place closer to town has more potential customers.
If the little one makes say $10,000 then the big one has to only see 2,000 people to break even on both (if we are just considering rent) The bigger one might see 8,000 to 15,000 people while the remote little one is stuck at 800 to 4,000 from year to year.
They serve entirely seperate customer bases that have different tastes in quality and feel and old established customers only in a small percentage will follow to a new location. So don't lose them, keep serving them and they will keep growing at each location.
If you can't do both, I would just stay at the little place until there is a total budget in place where years starting over would be required and could be survived to a degree. The new place would have to see 12,000 people to be considered a going concern consistently. This means you are totally prepared to put 3 haunts in there and handle the advertising, not just cover the rent. The free place doesn't have these "pressures".
To make the new place work it needs all 3 haunts right now right out of the box rather than building up from half it's size over years. The little one builds a new haunt every year and puts it in a trailer ready to roll?
Another fabulous post from the U.S.Department of Wild Imaginings, now in spectaclar stereo, sponsored by the Adhesives and Sealants Council, suggesting ways to stick things together since the 1800s. Not fabulous in a gay way. Your results may vary. Illinois residents add 8% sales tax. These posts have been made by professional post makers, do not try this type of posting on your own without extensive training, lovely assistants and a trusty clown horn.