50 BIs is pretty aggressive for PLO and it can go very poorly very easily, if only in terms of mental game.
In PLO, you end up all-in with a relatively small edge fairly often and I know that I can't handle that without being extremely comfortable with my bankroll management.
I'll play live, full-ring PLO more aggressively re: BRM for a variety of reasons (less RoR due to playing live infrequently, primarily), but for online games I play with any regularity, I need 100+ BIs just to be mentally comfortable with the inevitable swings. MAYBE as few as, like, 80... but that still feels pretty aggressive to me.
You should take a look at the
PokerDope variance calculator, using an accurate PLO std dev.
It's really not hard to play perfectly and drop 10+ BIs.
50k hands isn't that much in PLO, btw. (It's not nothing, but it's not especially significant.)
I know you don't want a lecture, but based on personal experience as well as pure statistical facts of PLO variance, I would strongly recommend against playing PLO full-time professionally unless you "back into it" (that is, you're playing and making money at it and suddenly it makes loads of sense to not do something else for money).
The long run in PLO is extremely long for a lot of reasons, and I honestly think that a full-time PLO grind can be more stressful than a full-time MTT grind (depending on average field size).
Putting in enough volume to "outrun" variance in PLO is an enormous task, and playing optimally throughout all of that is a huge challenge. It's only going to be harder if you're on a somewhat short bankroll.