One last question I have is what sorts of biners should I use. As of now I prefer the BD ovalwire because of it's low cost, but thats just me.
Those will work just fine. Light, cheap, simple and good for aiding down the road.
The aforementioned Neutrinos with cams are nice as well.
I would avoid getting to many "locking" carabiners. I may use them for a toprope situation, or on an occasion where the biner is particularly susceptible to rubbing and opening, but overall I have gone many years and thousands of feet of climbing without them.
IS the second harness for back-up? If its for your potential partner another helmet would be useful... When I started trad-I found that the smaller cams came into use the most-So maybe a couple small to med. would be a good idea.
Also-www.acmeclimbing.com offers discounts on bulk quantities of carabiners... So you can get a good lot of biners at a good price. Plus the company rocks.