You're going to buy a $500+ Bareknuckle frame but want to get thrifty on the crankset? I'd get a solid crankset, hate to see you snap an arm and plow your beautiful 'knuckle frame into the asphalt.

But, out of the choices, I'd go Sugino RD. I have one and it works pretty well, just replace the chainring as soon as you can. It felt pretty weak when I took it off to put it behind the spider.

There is a thread about "catastrophic failures" with a picture of an RD chainring absolutely destroyed. Cranks still looked strong though!