I've sharpened kitchen knives for about a year. I want to use a straight razor. which is a good cheap razor to buy?

I want a razor without any defects in the blade, so that a successful bevel can be ground. like with knives - I suppose i want a good quality steel that does not lose its edge or chip. but chipping is probably less important for a razor.

I have a diamond 200, diamond 600, a 1200, and a 5k stone. Also, Which would be an inexpensive stone to buy for polishing?