Not sure what lougotzz was saying about pcs being useless, but I assume he meant the actinics are useless. pcs are fine for BTAs, however, keeping bulbs to the daylight range, say 6700K to 10000K, will provide the highest PAR (photosynthetically active radiation).
As you've been warned, BTAs get rather large; however, you could keep a small one in a 14 gallon for a while assuming you maintain good/excellent water conditions with regular water changes, a minimal bioload, etc. Your lighting will work, you just want to located the anemone within 12 inches or so from the bulbs, which should be easy in a tank that small.
As mentioned, anemones aren't considered easy animals to keep. The BTA is the easiest of the host anemones. With two saddleback clowns, you might have trouble keeping the water quality up to the conditions an anemone needs. I could see one small clown and a medium size anemone for that size tank and not much else. You want to do some research, the tank need to be established for several months before you add an anemone.