What are you going for? Power? Control? What kind of racquet do you use? Figure out the recommended tension range for the racquet (it's written on the inside throat of your racquet, most likely) and use that as a guide.
since you were stringing @ 58 before, it sounds like you're going more for control than power. I'd keep your hybrid job @ the same tension: 58, see where that takes you. Its going to be tighter than full bed Xcel due to the nature of poly. You may find its too tight. If so, drop it by 2 lbs and see what happens.
if its still not tight enough, then raise it by 2 lbs. Always make 2 lb increments and avoid huge jumps.