Also I see a lot of people here saying that BTAs cause problems, when I get my 75 gallon set up (and running for 6 months or so for stability) I'd love to have an anemone to host my pair of clowns, but I'm a bit worried now. What would you recommend instead so I don't end up like some of these stories?
BTA's are known to wander very often, so personally I do not like them in a mixed reef, however they are by far not your only option.
I prefer either sand dwellars like LTA or Malu which can easily be contained and kept from corals, or my own personal fav is magnifica, given a high up perch they tend to stay put reaching for light, and unlike BTA they are actually a natural host match for percs and occs, though these require a little more effort at first, not always best for beginners, but doable.
I suggest trying to match species of clowns to natural host match anemone's when possible, this makes hosting happen usually right away, while many clowns often ignore BTA