+ 100 on the Avons. With the power these things deliver, I wouldn't use anything less than an H rated tire. You can run a 150 on the rear, as the later T-Birds did. They have long wear and excellent traction combined. Not sure what you can get for that 19" front tire though!
I have had good luck with Motorcycle Accessory Warehouse (
http://www.accwhse.com), and they have free shipping on Thursdays at times.
