haha, thats your call. my first blank came out with a few problems, mainly my bolt relief on the top rail was a little too large so the carrier hits it on its way back. So it doesn't work properly right now. I made a few corrections to my jig but haven't had the motivation to bend any more blanks.
if you consider your free time worth money, go with the ACE blanks, if you'd rather bend it yourself just to see if you can do it and enjoy working with the metal. then continue with you blanks. You already have the sheet and the jigs. wanna use your time to play, continue. if you dont want to possibly waste your time and cause a little fustration, call ACE.