Check out Track Of The Wolf - they stock parts, custom kits, etc. If you're wanting a nice percussion rifle, you can either use a rough stock blank or get a pre-carved stock.
I'm not knocking Dixie . . . but shop around first. Take a look at Track and see what they have to offer - look in Muzzle Blasts as well at some of the other suppliers . . . then make up your mind.
There are lots of suppliers out there . . some of whom offer "kits in the white". Tennessee Valley Arms (TVA) is another one to check out. I'm not current on what some of the prices are now but your budget and some careful shopping should provide you with a wood quality lock, barrel and furniture to put together a decent simple southern style rifle . . . something that's different from the "run of the mill" kit guns.