I normally use this film at 80 ASA, I haven't shot much of it, about 10 rolls of 135, but using D76 1+1 at 20ºC, I develop it (rotary) for 10'30".
I have quite good negs for printing with a colour enlarger.
As you are pushing the film, you might find you need to develop it in a stock solution, giving you better results.
A stock solution, is developer with no added water.
I would expect to see thin(ish) negatives, if I exposed at 200 ASA and developed as you have.
Mick.