My understanding is that storage at AMP is only available to members. Last I checked garages were $325 per month for a 3 year lease, and I think there’s a decent wait list to get one of them. There’s also slip storage available for $75 per month. Personally, I just haul my own stuff around. There’s a few threads on here where people have shared their setups for moving their equipment, both with and without trailers. You’d be surprised at how many ways there is to do it.
Also worth noting, AMP members are able to bring guests for practice days a couple times a year. Once you get the chance to check things out, get some gear, etc. let me know - I should be able to still get you some practice time without a membership. You also do not need to be a member to race at AMP, non-members can still sign up and participate in the monthly racing series.