Not sure about the 1 yr old rule for the BTA, cuz mine was put in after my tank was 4months old and it is still doing quite good till now which is almost 15months.
I am not suggesting you should do it like wat i did cuz i belive 4 months is a bit too rush for such sensitive spicies.However I would like to point out they are also very hardy compare to other anemone.It is hard to say what kind of lights they will preffer, simply saying they require 6watts per gal
is not responsable which most lfs
will tell you.BTA like to hide their feet away from birght lights, but if you want their tips stay nice bulb shape, i would say MH
will do the best.It is no need to rush and get a MH
thou if you only try to keep it alive.