will tangs eat inverts? ex:shrimp, crabs, snails, cukes, etc. And will a bubble tip anemone eat a tang or midas blenny?
No, inverts will be fine. Tangs mostly like algae type food but will eat some meaty stuff too. You'll be fine with a bubble tip.
I suggest you do a ton of reading before throwing down $15k on a tank. Tangs can be tough due to aggression with each other and due to the fact that they are more susceptible to disease than most other fish.
Good luck and I look forward to seeing your build.