1995 E300D OM606 NA motor swap

[freesoul]

Not going to get into the reasons why here, but I am going to do an exact motor swap for my car and look here for guidance.

The donor motor has 265K miles on it, starts up in cold weather just fine and runs nice. Only leak is on the IP and I have yet to isolate where it is but its not terrible, the fuel lines have been recently replaced as they can still be seen through. The motor is being removed today by my cousin at his shop and I will have it in my garage before putting it in the current daily driver as my budget allows.

Here is what I plan on changing:
Oil Pan gasket
Rear main seal
Trans front seal

My cousin mentioned I may want to do the valve cover gasket at the same time, it is not leaking. I am already over budget on this car and don't want to spend stupid but if its wise to do while the motor is out I want to do it. If I did the valve cover gasket I would probably want to adjust valves and check timing chain. Are these things within the skilset of a DIY like myself? I can get my cousins assistance and while he's not a diesel tech he is solid on cars in general.

Motor mounts are new. New belt tensioner and fan clutch. Anything else I should be looking at?

My plan is to have the injectors from the old motor tested and rebuilt if needed afterwards and then put a new set in the donor motor since I don't know the history of it other than it appears to be well maintained. I'll post some pics and keep this thread updated.

TIA