Yeah I wouldnt walk away from the Schwinn just yet. Are you truely a "Schwinn" guy, or is that just a moniker you came up with to log in real quick? If you really love the brand I can almost assure you that it will be a very, very long time before you find another Power Flow brand new, assuming that one is new.
That was a very nice frame at the time, it still is actually. I personally prefer all the tanks of that era, FBM AOD, S&M War Pig + Sabbath etc. It was a time of black is black, being rude, crude and obnoxious. Having a bike that would survive WWIII and so on. Then came people wearing girls jeans, flourescent colored shoes and everyone becoming a weight weanie with their bike. Oh I can shave 2.7 ozs off the total by getting those ti bolts and washers. My own personal opinion, spare me. I still ride an FBM AOD, lets see if some of this stuff out is still kickin in strong in 12 years is my philosophy. And I can beat the living tar out of a bike, cause I'm smooth and all and have no worries.
Had I come across that frame, I would be asking the guy if he would take $60-75 cash. Worst he can say is no. He may say hey to be truthful, I paid $130 for that bike so many years ago and thats what I really need to get out of it. If thats the case say thanks a lot, let me sleep on it a couple weeks and I'll get back with ya. Then do just that.