I love it! You young guys are discussing bowing up and us old(er) guys are bowing down. I just went from a 60/70 Ultratec that was set at 67lbs, and now shoot a 50/60 Trykon set at 62lbs (cranked all the way up). The Ultratec (built-in overdraw w/shorter arrows) shot 264 fps, while the Trykon shoots 271 fps. Remember my old arrows were 1.75" shorter. So, like bigbulls said, new bows are much faster. As sure as I am that I'll be turning my Trykon down in the next few years, you will be able to pull a 70. Just make sure you can shoot sitting in a treestand or a blind.
I wish you many, many years of good hunting!