This is from my personal experience, but I wouldn't get any of them. I've made compromises many times with fishing tackle, and always regret it later on. If you don't think you'll like it or have a good use for it, don't buy it, even if it's a smokin deal.
Use your Avid for jigs and plastics, the Powell for cranks and spinnerbaits, then save up one or two more paychecks and get a rod you really want. But seriously, don't settle for something less than exactly what you want. It's more expensive to buy a rod, use it and decide you don't like it, sell it and pay for a rod tube and shipping, then take the hit for however much money you lost than it is to buy the exact rod you want. I went through three rods looking for the perfect rod for me before I said f*** it and bought what I really wanted.
I would recommend getting a rod that is 7'3" minimum for any sort of flipping or punching. I prefer rods over 7'8 personally. A long, powerful rod can be used for a lot of techniques, too. Flipping, pitching, punching, frogs, heavy spinnerbaits, swimbaits, heavy plastics, and jigs. That's just naming a few. I'm using a 7'4 rod for jigs and plastics and sometimes it feels too short...
For me a Mag-Heavy rod with 20# flouro or 60# braid is an all-around setup. I can do everything I need to do plus throw a squarebill, lipless crank, or spinnerbait if I need to. Just use your thumb as the drag. Your Avid can do everything you need it to - it may not be perfect for all of them, but that's where your two other rods come in.