Just wondering how much should I be really be asking?

[BabyBlue]

1986 Chevy Stepside with the Silverado package. The truck is Frost White w/charcoal interior, it has PW, PDL, AC, CC, TLT, and a rear cargo lamp. The truck is lowered 5/4 and has Appliance FineWires on it wrapped in brand new BFG's. The truck has the factory engine which is a 305ci V8 and it has 111k miles on it and runs good. The truck has no rust and the only problem is that it smokes a little on start up and sometimes before it is warmed up. I've been asking $6900 and have varied the price somewhat down to $6200 before and saw some more inquiries. I guess my question is that should I have to fix it up more or should I just give up and sell my blazer? I've had lots of trade offers for mustangs(80's/90's), jeeps(98/99) and a camaro(96) but I just wasn't interested because they were not as nice. I've been offered 4500 cash, and one offer of $6500 but like usual when it came time for payment the guy flaked. I don't look at NADA because I consider it an outdated guide, I sold my 85' SWB 2wd for $7800 two years ago and NADA said it was only worth 3k. I'd just like to see some opinions, and idea....thanks

-New BFGOODWRENCH T/A's 255/60/R15 and 275/60/R15
-New Dash
-New Headliner
-New Door Straps
-Painted Grill and Bezels
-Painted Engine Compartment
-Lowered 4" w/rear shackle kit
-2 1/2" Flowmaster Exhaust
-Tonneau Cover
-Reasealed Tranny
-New Plugs/Wires/PCV Valve
-New balljoints, shocks, etc.