I second any advise on buying an M1 from CMP.
For someone who lives as close as you do, simply take a day to drive to the N/S store, take your time picking out the rifle that meets all of your requirements, grab some ammo while you're there.
A few years ago I rode up to the North Store with my dad and picked out a nice H&R M1. Since then I wrangled an SA out of a buddy, traded him a Ruger Blackhawk convertible for it, a rack grade.
As long as you use genuine M2 Ball, you're fine, or reload to mil-spec. I'd say brand new ammo specified as .30-06 Springfield would be acceptable, as it should be loaded to original specs.
CMP has m1917s right now, but no 03/03A3s. But the m1917 would be a fine .30-06 bolt gun to obtain, whether for shooting, investment or collecting.