I have put northern bobwhites in a large flight pen with ringneck pheasants with no problems. Not sure about the Tennessee bobs - always heard they were very aggressive. I had some chukars in a breeding pen with adult pheasants this spring and had to separate them because the chukars started...
Looks like a yellow golden chick to me. The Ghigi (aka yellow golden) is a mutation of the red golden so I suppose it is possible to get a yellow from red parents. G
You might ask if they can get gamebird (or turkey) feed for you. Some stores can get it but just don't stock it because they don't sell much of it. If not, I would probably check around other places. While adding nuts, etc. helps, I just like knowing my birds are getting a complete feed...
Keep a close eye on them. When I tried pheasant eggs under a silkie they hatched great but wouldn't stay with her to stay warm. I ended up having to take them and put them in a brooder.
I also raise silkies so always seem to have a broody hen. After a recommendation from a long-time pea raiser, last year I started my pea eggs under a broody hen the first week and then moved them to the incubator. I was having pretty good hatches before but this improved them even more.
I use pine shavings for both quail & pheasants and have never had a problem either. I actually have better luck using a plastic tote with shavings the first week before moving them into a wire floor brooder. I assume because there is no draft possible in the tote.