When I was a Free Methodist I did have a fairly constant worry along the lines of "what if the Calvinists are right about XYZ in Scripture?"
Now that I'm a Catholic it seems most of those worries are done away with with the simple reply, "Well, I guess I'll be a Thomist, then, not a Molinist."
One of the weird side-effects I didn't totally expect from going Catholic, is that while I'm still interested in what the proper formulation of the intersection of predestination, foreknowledge, sovereignty, universal salvific intent and free will is, it is also the case that in a good way, I no longer care. I no longer have to worry about the weight of Biblical evidence about whether some grace intrinsically justifies or doesn't, or whether election is conditional or unconditional. I have boundaries that shouldn't be transgressed; truths that must be respected, and perhaps held in tension, but as long as they are held I needn't worry about the details.