Haha. My counts were higher than that before I ever injected anything.
I go back to what Dante said, there are entire populations living at elevation with HCT in the 54-56 range and none of them or having strokes.
You can also count on one hand how many bodybuilders have died from strokes. Heart attacks... that is another story. Manage that blood pressure. You could have an HCT of 60. If your blood pressure is normal and your platelets are normal, there is no risk.