Well done, you'll always find a use for the shims and feelers, something every workshop should always have.
Let us know with pictures how you go with your first turning jobs. Your right with using the inexpensive welded carbids for removing scale, and some roughing work. You will have to grind them as with HSS and you need a special grinding wheel, I think it's silicon carbide, a green wheel, only for carbide tooling not for HSS or anything else. Best wheel for HSS is Al Oxide