Get a better head than the stock one.
Sport touring should run cooler. and "beware, you may need to cut a little bit of the fins to get the head to clear the frame/tank/petcock. be prepared! "
If you've never replaced a crank and bearings and you haven't already assembled the tools to do so then I would suggest replacing the seals and saving the crank and bearings for a later date. From there, swap in the reeds and new carb. Jet the carb for the stock engine and your exhaust. Once you've done that and it's running well, install the DR kit and re-jet the carb for that. I've seen too many people buy everything at once, install it all, and then be at a loss as to what went wrong.
I reread your post and you didn't get a bigger carb but a bigger carb jet. I'd go with a bigger than stock carb with that kit given it's propensity to generate lots of heat. (edited)