re: Best option for fence boards?

Normally can get a little better price at a fence supplier. In Shreveport we have Central Fence. Benefit of a place like that as well is you take your plan up there with the measurements and they'll put the material order together for you down to the screws/nuts and bolts.

But there is very little margins in fence materials (fencing in general really), so it wouldn't be a big discount. If you don't have a fence supplier in town, you could go to the Home Depot/Lowes or local lumber yards contractor desk and ask about a contractor discount. They normally will help you out a little bit on price if it's a big enough purchase.