#1
Hey, I am in a hardcore/metalcore band and I am looking to eliminate that flabby rubber-band feel of strings in Drop-C tuning (CGCF). I am currently using Ernie Ball Hybrid slinkies which are 45-65-85-105.

I have heard wonderful things about DR High-Beams and am considering getting the 50-70-90-110 version. The thing is, I play using my fingers, and I like to dig in A LOT. Would the thicker gauge be undesirable for getting a powerful, punchy tone?
#2
What I have is a five string set and I used the four lowest strings for CGCF (however, it's in BF#BE at the moment). The extra string also came in handy when I snapped the top string.