327 Motor Coming out what else to replace?

[Jferrante]

So I am planning on taking my the motor out of my 64 C10 in the next month or so since I have some leaks from the rear main seal as well as timing chain cover. I am putting a list together of items to replace while this is happening and would love to hear any other suggestions for parts to replace or best place to source some decent fitting parts.
Here is the list I put together so far.

Oil Pan and gasket
Timing Cover and Gasket
Front Main Seal
Water Pump Gasket
Possible new timing chain???

Thanks for the input...also I did a search but didnt see anything so point me there if this has already been discussed.
Thanks again