The PP 15: Where to go from here?

[twowords]

Quick background:

I took an ill-advised shot in the dark at the party 15 a few months ago....with a BR of about $1200. After some winning I started 4-tabling. Hit a wall, my BR plummeted to $250. Steaming mad, I quickly jumped in a $200 NL sit and go. Incredible luck won it for me, an $800 profit. Hit the 15-30 game again and ran it up to $6500, down to $1500, and now, to $5700.

Clearly, I am lucky to be still afloat. 28k 15-30 hands at 0.5BB/100 (16/7/2), perhaps nothing to brag about at 2+2.

My new priority is to not go broke.

With this in mind, what advice would you give? Should I "get off at the top" of this rollercoaster ride, and drop down before I bust out? Of course, I do not know even if I am at a high point, but I have realized my BR may not last with these swings. Or should I stay the course, hoping I can avoid another major downswing while bonuses and a new rake refund program build me a proper bankroll?

Thank you for your thoughts.