Thanks for the good input & suggestions. Having done more research, I'm now leaning toward picking up an old/used 870, cutting the barrel down to 18.5, adding some form of sight, and putting on a modern tactical stock, grip & forearm. Brownells has a ZOMBIE HUNTER KICKLITE TACTICAL STOCK for $80. I sort of cringe at the thought of taking a perfectly good long barrel and chopping it down though. Looks like I'll be at the Lincoln gun show later this month scrounging for bargain table beauties. A Win 1200/1300 would work too.
Looking at the new budget priced models out there most all are either made in Turkey or China....some with old traditional manufacturer names (total blasphemy). I have a hard time knowingly buying anything made in China. Turkish weapons on the other hand, from what I hear, are fairly decent. Can't beat US made though, even if its old.