You should be close to a 95. Usually between 94-95 with that kit and a proma. Unless your at some odd elevation. And like 52 idol jet. Your in the ball park.
I think your heat issue is from your head. I would check it for leaks. Check it where it meets up and at the decomp. However even if there are no leaks the original head dose not cool that well.
I always recommend 70cc Puch head and modify it or buy the one already modified for a hobbit. You will have to make spacers or get Puch cylinder studs. But the difference in temps a amazing. JBot has a tread on how to do it somewhere.