Hey 2qk4u, I've got an 06 with similar mods. I kepy my exup for the bottem end though. I absolutely agree with going -1. I bought an OEM front sprocket from an 02-03 R1 off ebay. It's cheaper than going with a quick accel kit and it fits right on!
You may also want to consider getting a custom map/tune. I did and WOW! My bike is a totally different beast. It pulls like it's in 1st gear through all the gears!
Mods: PCIII USB, Boz Brothers Exhaust, Custom LED integrated tail, DDM 6000K 55 Watt HID's, Speedo DRD healer, Factory Pro Velocity Stacks, Gutted Cat, Custom tune by Robs Dyno Service! Watsen Flushies, Joe Florida LED kit, ASV C5's, D3 Grips.