eek. before you get into any of that, just get a straight run of PSA sandpaper roll (80 grit) and a cheap eclipse style honing guide. It'll be faster than something like a tormek and you can set any angle you want.
In the longer term ,you're looking for a dry grinder and no angle guides. Buying some jigged up kit to start with (power) for several hundred dollars or more before you get to that point isn't going to be any good.
I've been down that road (a generic tormek, then a real one, various little angle jigs), that's from experience. I'd have spent less total time and a lot less money if I'd have just ground bevels on 80 grit PSA roll until I was ready for the dry grinder.