I had a similiar type thing going ive got my BR to 5.5x what i started with and its stalling now but im only 2 weeks in, assuming I am just running bad as i was once @ 10x and stabalized, I am going to say you manage to get it to 818$.

Gonna be hard to step it up, it gets SUPER boring playin the
micro tables and often enough I have gotten victimized by opponents playing poorly(imo) and catching everything.

Then again i dont consider myself lucky....