1) Maybe, although there is no way to know for sure
2) Depends on the species and the clown, not unheard of, but highly unlikely, IMO
3) What species of anemone?
4) What species? FWIW
, most anemones require the same or more lighting than corals
5) Tank Raised BTA, but I wouldn't add an anemone until the tank has matured a year or better, anemones are very demanding and not for the novice.
7) Agan, depends on the anemone, some prefer less current and some prefer high current, but all require reef type flow, upwards of 10 tank volumes per hour, you may just have to diffuse it some for some anemones.