I guess I'm one of those obsessed with "cheap" guys. But I'm going about it a different way: Keep the costs low to keep the volume high and balance it all out in the end in terms of money burned, but at a maximum of trigger time. I have a "cheap" rifle that shoots quite well, with a "cheap" scope that does the job quite nice and I'm not worried about scuffing either one. I shoot a "cheap" calibre that's commonly available, easy to reload for, and in a pinch good factory ammo is available. My savings on the gun and optic translates to more money spent on components/ammo and gas to go to the range. I'd rather have a cheap turd of a gun with a good load that I can hit everything I aim at than a custom-built rig that I can't afford to shoot.
But the way the OP plans to go about it... unless he's taking my approach (I'm dubious of this) then he's doing it all wrong.