Actinics are frequently used for color rendering for the human eye. Its true that corals need a lot of 420 and 680 but most MH's provide enough to not need supplementation. The problem these days is that most "actinics" aren't actinic, they're blue, not the violet corals need. I like using them because they look good but they are not necessary.
Energy Savers has a new 150W DE + PC actinic + moonlight for really cheap. I would look at those, I think for your tank they would be a good mix of economics and product, without being overkill. I will always give Giesemann props but they aren't cheap (understatement,) PFO makes a good pendant but its almost as high as Giesemann for less quality. Sunlight Supply makes a 150 pendant thats nice. Plus the "ReefOptix" scored really well on Sanjay's most recent test. Also not cheap. There are as many products out there as opinions, so good luck with your adventures,

And remember, this is the fun part. Once the tank is set up, all that's left to do is pay the electrical bill...