Thank you for all the replies.
Yes, I have Zinn's site bookmarked. If I built a bike I would consider spending $400.00+ on cranks, but I am not.
I have thought about clearance issues. I am aware that with longer cranks, peddling through tight corners would have to be sacrificed. Not a problem, the cranks would be for a SS with a high bottom bracket shell, I rarely take super fast corners on my SS anyway.
I also have the SPECIALITES TA site bookmarked. I would prefer a wider Q-factor than the 75mm on offer.
In the end... it is impossible. I spent 4 hours yesterday searching and can't find a sub $375.00 option. I'll probably stick with the 175s until the drive train wears out. From there I have no choice but to spend a lot of money on a better fit. I hate being tall, the standardized machines don't fit.