I've been doing a lot more research on breeding and have found that he most likely possesses the metallic gene (+) which is dominant. I've no idea if he is hetero, or homo for that gene. 1 Breeding should let me know. If he does indeed possess it, I will get at least ~50% metallic if bred to a non-carrier. If bred to another metallic it'll be ~75%.

To preserve his red/silver color I'm looking at breeding to a recessive such as a pure white female CT or yellow/gold one. I'll be on the hunt for a female to match this who also has near perfect fins (proportional around and symmetrical) to improve his fins further. Masked female would be a plus.
I may
have to set up a split 10 gallon soon for breeding if I find the perfect female for Heuvos.
If I'm grossly off in my understanding please let me know. I've dabbled in genetics before with gerbils and aced the course in college so I can handle whatever terminology you care to throw my way.
Any advice on what color I should reach for? Metallic yes or no? Does everyone like or dislike the metallic gene?