I think a tight bezel will always be a better starting point than a loose bezel, as you can take metal away more easily than you can put it back! A Clark bezel quite often needs some 'relieving' on the thickness and inside diameter as well, to work perfectly.
Hawk's watches were a really great deal, with the GEN movements, and probably the best Snowflake REPs we have had on here to date, at least for sale. Which one do you have?
Genuine black bezels and inserts (if you're not looking for a fancy fat font Mk.3, Long 5, Kissing 40, etc. insert) can be had at reasonable prices, these days, and even blistered serif inserts are still available.
It's when you start going down the blue route that things get disproportionately expensive. Find a nice, blue, textured 9411 insert for much less than ~$2k
Black GEN dials are cheaper than blue, etc, etc.