150W is enough but it depends on how high your have it
mine is doing really well under 150w but its only about 15cm from the water surface (due to it being a small tank)
i still dont know what kind of anemone it is, i would think a Bubble tip is a good starting anemone if you can give it the right water quality, they have lower light requirements than other anemones, but from what ive read most anemone dont survive the first year (due to begginers buying them and not doing the reasearch)