Thanks for the input, guys.
The Daytona is coming along. I had 4 and 6 Racing set up the geometry for me. They installed offset steering head bearings to adjust the trail. Previously, I had been running the forks with the caps about halfway down in the upper triple clamp. Now, the top of the fork caps are about 4mm below the top of the upper triple. That's using shorter top-out springs than stock, which make the forks about 4mm longer when fully extended. Otherwise, they'd still be 8mm below the top of the triple. I've re-sprung and re-valved the forks and I have a Penske triple-clicker in the back.
As for gearing, I'm thinking I'll try 15/48 for BHF. That's pretty short, and will probably require all six gears, but I think I'll try it. For Road America, I'm thinking 16/46. I was running stock (16/47) up there at a track day a while back, and with the bike in street form, I was still getting right up against redline with a tail wind on the front straight. Plus, the 675 runs out of steam as you get close to 14,000 rpm. I've still got to think about what I'll use for Heartland.
Thanks again for the comments.