Hey Lou, I did a 60" 1 pc recurve awhile back with .0025 and a tip wedge, at 1.5" wide at fades, it was a little tricky to get the limbs straight enuff to suit me. a bit wider would help with stability I'm thinkin, but .003 would be harder to tame , especially if you didn't put a wedge in there.
I only side tapered the last 9" before string grooves.