I do plan to invest in some proper stands. Even though I really see no danger in what I have been doing, I'm not so arrogant to think that I see and understand all. In the meantime, I plan on continuing with BW squats, goblet squats and front squats and, if i want to do something heavier for my knees, opt for snatch-grip-deadlifts.
I might've survived though.
Thanks, all, for playing along.