Allright.....here's my OPINION. (You asked.)
$45K.
Though '66 Plymouth Satellite and '66 Charger Hemis are among my favorites, I have always been ASTOUNDED how unloved they are compared to '68-70 cars, particularly since the engine is essentially the same. But the image, and thus demand just isn't there. They will always be the "bargain" of Hemi cars, due to less demand and relatively high production numbers.
The lack of options is drag-oriented and cool, but we're not talking an actual drag package car like a '67 WO23, so it DOESN'T ADD VALUE in the end. It becomes a buyer preference issue. In the same condition I don't believe this car brings any more money than a bucket seat loaded Coronet hardtop in good colors. Just buyers with different tastes.
Finally, though it sounds like a very nice car, I see a full repaint in its future. It sounds like it was a drag car in its previous life and was going to be a FAST-type warrior, so the trim probably has some "patina" that isn't going to go with a show repaint. I know you believe the exterior is all that needs to be shot, but on $50K plus cars, its a leap of faith to hope that you're going to get a perfect blend with the old paint when you redo it. Its nice when it happens, but I think most savvy buyers know its a coin toss as to whether doing a partial repaint will be successful.
I see there are still guys with '66 Dodge and Plymouth Hemis still asking 6 figures. I think they're deluded. In Jan '07, at the TIP TOP of the market, the NICEST ORIGINAL '66 Satellite Hemi extant, the ex-Pat McGruder/Gary McKay 1700 original mile car sold for $125K, and I think there were only 2 guys bidding past $100K. It sold for about half that when McGruder's "Factory Muscle" collection was dispersed, and was one of the last cars of that collection to be sold (and not becuase they were hiding it). The only other '66 Hemi Car that I know of to compare the Satellite to would be the mauve 6000 mile Hemi Charger. A well known drag car like Jere Stahl's Belvedere would certainly bring a premium, or one of the handful of Belvedere ragtops. You might talk about the '66 4 door that brought the big money, but we all remember how long that car ran around before it found the right two guys to bid it up.
But at the end of the day, most 66 Hemis have always seemed to sell for a 30-50% discount from whatever equivalent'68-70 B-bodies sell for. It appears $60K or 70K buys you a very nice '66 Hemi car without much of a to-do list.
Well, there's my take on it. And until somebody actually pays you money for your car, its neither RIGHT or WRONG at this point. Its my OPINION.
Good luck.
