Well, you're certainly beating 10nl. However I think its a huge mistake to attribute that 5k hand stretch as variance. Obv set over set and such are going to happen, but it seems that the beginning of that stretch is just downhill the whole time which is kind of funky. imo figure it out now before going to 25nl.

Since you have the bankroll though, and some experience now, its not really bad to just go on anyway. Just set a stop loss.