okay...felt like chiming in.
For a FO tank, you can go with Bio-balls, you can go with Wet/Dry(Trickle), or LR, or (and this is the key)...ANY combination of the afore-mentioned.
If you decide to go with Bio-balls...the additional LR will HELP. You will STILL need to do water changes, as the nitrate levels with Bio-Balls can get high from time to time. So test for 'trAtes and do water changes accordingly.
The beauty of a FO is...even if you have algae problems on your LR...WHO CARES? The main reason we don't want algae in reef tanks is...they can overgrow the corals, and they are a sign of bad nutrient exporting, which means other chemical levels (phosphates/nitrtates/silicates/etc) are too high for the corals to be healthy.
In a FO, the only problem with Algae...is Asthetics. And in some cases, it actually looks neat.
So if you're having a hair algae problem, and decide to go FO...leave it on there. Chances are good you'll end up with a
algae eating fish like a LMB who will LOVE the extra food!
As far as fish for that size tank? Try to stay away from Tangs. If you MUST, please only get one. Almost all tangs need at LEAST a 80 gallon tank.
A
Dwarf Lionfish is a pretty good choice. You can get Angels, butterflies, parrot fish...all kinds of stuff that you CAN'T really put in a reef tank. The ONLY thing you really need to worry about, is getting fish that don't like each other. Get
this book, or one like it...and look up compatibility. Also double check with your LFS (but please be leary of their advice...some of them just want to sell fish).
As for lights...if you HAVE a VHO fixture...by all means use it. But keep in mind, when it comes time to buy replacement bulbs...it might be cheaper for you to just get a NO fixture then. You do the math when the time comes, and decide then. No point in debating it now.
If you have a skimmer...I'd keep using it. It'll help!
I wish you the best, and hope you keep us posted! I know this is The "REEF" Tank, but I think most of here like FO tanks too! (heck...I have both, as do most on here probably).
HTH