2C is a poor bid, in my opinion, not just because it is light but also because I have found 2-suiters to be difficult to bid after opening with 2C. The jump to 5C is atrocious, aweful, pick the most pejorative term you can come up with. Why take up so much bidding space when you have no idea if the hand belongs at 3N, 5, 6 or 7 clubs, 5, 6 or 7 NT, or somewhere else. Respond 3C, which is game forcing, and go slow.