Got a 560 SEC - small list of problems

[Sondrusen]

So I got just got home my 88 560 SEC, damn it's fast, really takes off when pressing the pedal, it's a 300hp engine

But apart from that, it has lots of small problems, and i need some advice on what might cause what

The car is hard to start when cold, but it comes around after trying 5-6 times, I had a similar problem with one car, and it was the ovp relay that was bad. My ovp relay looked good, and I sprayed it with contact cleaner, but still hard to start. It idles fine, but the IVC is not working, most likely the wire, removing the wire when idling had no effect, even after cleaning.
At cold you have to press the pedal slightly to keep it from dying, but after 1min it will idle on its own, but at high rpms. Timing seems fine, ignition system is newly serviced.
There is a strong smell of fuel in the car, might be the EHA, but it has no visible leaks.

The car has been sitting for a while, it's a project car, but shift fine, and drives fine. Any help with the problem I have will be much appreciated