Pickup trade for Suburban???

[bfr57]

I have a 71 4x4 longbed Custom Deluxe 1/2 ton PU I've had for almost 20 years. It's a rust free AZ truck with AC, tilt, PS, PB, 3:73 gears, and a ton of stuff I've done to it like a 700R4 w/custom cooling and spin-on filter, 6" all spring lift, top end engine upgrade, headers, HEI, etc. The paint and interior both need replacing, but other than that it's solid. I have the oppurtunity to trade for a 72 Suburban, 4x4, with front/rear AC (doesn't work), Dana 60 front, 14 bolt Corporate w/limited slip, 10" lift (7" spring, 3" body), custom stereo, 383 stroker w/400 AT. It does have a little cancer in normal places. I have a family of 4, so we can't get everybody into the PU, which is one of the reasons for looking to trade, and I have a trailer to haul the big things I wouldn't be able to get in the back. This guy wants ~$1500 on top of my truck to trade. Anybody have some opinions on a trade like this?