I'm sorry I didn't see your post sooner but better late than never huh? It sounds like you have a very long list of troubles, I'm sorry to hear that. Zoebess posted a very good link that tells all about inversion therapy.
It tells all the benefits you get from inverting and it sounds like you don't have anything that would prevent you from inverting. There are some conditions that would prevent a person from inverting so check that section out too.
If you don't have any of the things that would prevent you from inverting I can almost be 100% sure you will get better with time. It doesn't happen overnight, it really depends on how bad your condition is but once you get the hang of hanging you'll never look back.
Good luck, please let us know if you get a table and how it goes. Again, sorry it took so long to get back to you.