What powasky said.
I WOULD NOT use Kodak Ektar 100.
Personally, I think you should let the hired pro take care of the color with his digital.
If I were in your shoes, I would stick to B&W. and later - at your leisure- have silver gelatin fiber print made - in this way, you are value adding above and beyond what the hired pro will be furnishing.
This is from being in your shoes once before.