Well, Chuck, that looks like a very interesting project you've got started, in fact, it almost looks like the 'vehicle' you're modelling had a purpose at one time maybe. A small hint, don't keep track of the costs, you'll only be aghast at the end, its easier to just pretend everything comes out of the scrap box, less stress. It looks like you've got the basis for the power plant already as well, this should be an unusual project, and they are always the best.

Does anyone know how to do steam remote control?

Lots of tiny tubes maybe, long ones?

This should be fun, got a front row seat,

Cheers, mad jack