I'm not sure I'd call BABIP a truly luck driven stat. If anyone on this forum got out on the mound, we would post pretty high BABIP (for the pitches that stayed in the park at least) that would never normalize. I suspect the high number has something to do with Gonsalves needing to make some adjustments. That, too, is pretty normal given this his first taste of AAA.
As for his future, I think most projectors have him as a mid rotation guy. That seems reasonable, but given his results, he could likely end up better... or worse. You never really know.