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Polish frame probably a better value and darn sight more flexible in getting exactly what you want.
My main concern is that those Dolan aren't the strongest of frames, cracking near the BB is not uncommon but does happen, so putting a lots of effort and times for a frames that may not last a while.
Steep angle as in 73 degrees headtube? a fair number of frames have that, that or more rake on the fork helped.
What about getting a disc frame and use magic gearing?