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Ten bucks says you'll do this anyway. If you can afford it, grab a variety of shave ready blades on the classifieds. So long as you don't mess them up, you can shave with each of them a couple...

I started on a 4/8s spike and it was actually pretty easy to maneuver. I have since aquired a few 5/8s and 6/8s blades, which are not yet shave ready but I'm an idiot and have used them all anyway....