kingoverlord4567

So I'm building my own V guitar, and going to order a custom Floyd bridge, but there are a couple things that confuses me. First is the block, the list consists of brass, tungsten steel, stone and titanium and the sizes from 32mm up to 42mm. What is the pros/cons of each material, and size, and ultimately, which should I get? The other thing that confuses me is the nut size, that is listed from R1 up to R10, I going to take a guess that those are just varying sizes, and I did measure the nut shelf at 1'11/16s (if I remember correctly) So, if anyone can help, I would appreciate it. Thank you :D

I have had a guitar since 2008, a Samick explorer model, and been dabbling every so often since, and rekindled the flame with Rocksmith. I tend to hold the pick pinching between my thumb and my forefinger, sometimes being supported by the middle finger too while resting my hand on the bridge. My question is, is this ok to hold the pick for the blues-thrash metal genres that I'd like to cover, or do I need to hold the pick differently and basically re-teach myself on picking? (the way I hold it and how I rest my arm on the body/bridge is really comfortable)