I Have a Je 1397 kit, but i have the lower compression at 12.8. I also have a second intake in the exhaust side, with sprockets. I have at the rear wheel 194.7. I did have a heat problem, also a starting problem, they where 2 easy fixes, the first was add water wetter, and a second fan. The second was the starting when the bike was hot, i added a second battery for 24 volt starting. Now the bike runs and starts all the time, i only plug the second battery in maybe once a week if that!
Now the answer to your other question,, yes it is very possible to make that kind of horsepower, and make the bike streetable! Goodluck!