Thanks everyone,

I guess as with all questions pertaining to half art and half science, it seems that there are opinions built in to the answers. That is good, of course. But it also means that I have to walk the road myself (thanks to the guidance of the kind folks at the SRP) and formulate some opinions of my own...

All in all, your replies have answered my questions. The science parts anyway. Now I need to work on learning the art part!

Thanks again.

Jed