Par is not an issue with LED's.In fact to much Par is the real issue.Two fixture's of that size should do fine.The choice of drivers and bulbs are more important and reflector angles if you decied to go that route or lenses that will intesidfy the ilght even more.The new cannons are very cost effective and do a nice job.Also the cost of AI's and other high end lights are comeing down allott.I have four AI's on my 150 and hoist a mix tank with about 20 sps pieces that are doing very well.
Yeah, I have already learned that coverage and lens choice are important. Color is something that seems greatly debated so I am wondering about the solderless kits for ease of switching out LED's.