No problem, the xenia, zoanthids and mushrooms should all be fine without targetfeeding. The all get most of their food from the zoozanthelate(sp? no clue how to spell it lol) basically they get their food from the lighting, and the nutrients in the water. As long as your skimmer isnt overpowered for your tank ur good. If and/or when you get alot of zoos, youll want to does some iodide, but im sure you have lots of time before that happens.
The torch your talking about, is it a branching frogspawn or branching hammer? I have some branching frogspawn, Im still working on the best food for these guys. I try to target feed them but they dont seem to really take much. they are largely photosynthetic as well.
Just found this online "Feeding of smaller meaty foods such as brine shrimp, mysis shrimp, krill, cyclopeeze, etc will rapidly speed up the coral's growth and stimulate its colors. Feedings are not required however as Torch corals are excellent hosts to symbiotic zooxanthellae. As such Torch corals can live almoast solely on energy of photosynthesis"
edit-ugh forgot about where to buy food lol, I buy my stuff locally in Tillsonburg at the lfs.