Opinions on '95 E320

[d.delano]

Hello All-
I have been looking for a nice w124 for about three years now. I've looked at a few, and in the end decided to let them go on account of not the optimum color, most had grey interior(not my fave), rust, miles, price, etc. Finding the right one takes time.
Now I believe I have found the car. Black on black '95 Special Edition. Very nice and very clean, 66k. Already had the head gasket replaced. Has transferrable warranty with 2 years on it. This would enable me to replace the engine harness, and the A/C evap if they were able to determine a leak(A/C works excellent). Has a very cleanly installed Alpine head unit with iPod connector and Sirius satellite capability. On the dash center panel, there is a button up by the defrost that has a graphic of a tire with a chain on it? Never seen that before. 2nd owner, he bought it with 40k on it. Came from upstate NY. He has had it 2 years. This car is what I have been looking for.
Guy's in law enforcement, but not a DIYer and basically doesn't know jack about his car other than where to put the fuel. Car has records. He wants 10k.
Caveats: body is in great shape with no rust and undercoating that looks as brand new; it's just that the rear subframe carrier? is white with road salt corrosion(it's a small metal crossbrace going across the rear of the final drive) and the rear lower control arm bolts are rusty, and I think I thought I saw some surface rust on the rear lower control arms around where the bolts are located. The exhaust is also rusty only at the joints/welds. Final drive also has a 1/4" cake of oil on it, which may be normal. The only blemishes on the car. My questions to the forum:
1) sound like a good deal?
2) with the petroleum situation as it is, would you consider it?
3) with all the troubles with fuel relays and throttle actuators, et al, would you buy it?
4) how bout those rear control arms? do they tend to rust out like the w123s? that rear-end rust bothers me
5) the classic w124 trans problem; shifts fine now, but...
6) negotiation tactics? I don't want to insult the guy(he's HUGE) but I would like to talk him down a little

I have a week to decide as he's on vacation. I'm agonizing over it because I know if I let this one pass I will never ever see one again. This will be the last black-on-black that will ever come my way for sure @ 66k miles, and I don't feel like keeping vigil for another 3 years, but I also don't want to make an unwise impulsive decision as I already have a fine w123 diesel that gives me great joy. If I let this one go I'm just gonna give up the search. Thanks all