Thanks Lew & Mark- That's how I'll do the posts, so this thread contains the actual content.
Thanks Lew, I agree it will hold up quite well. I "just" followed the Linn Wescott book, though since 2x3's are significantly less expensive than 1x4's ($2 vs $6) so using the 2x3's make it (look) Much Beefier. They even held ME up doing arm push-ups! LOL!
This build has changed significantly from my initial ideas. I've always (40 years ago) built single level on a board, so now I'll reconsider layout design, I'll see if I can come up with a multi level idea on the 63x65" & the extension space (though I'm really considering a mountain/tunnel) in that corner...