Also was wondering if anyone knew if Lamport Signatures would work with SHA3 in the inevitable case that someone was able to find collisions with SHA256. Quantum computing it rapidly approaching with the use of graphene.

Here is the article I found on the topic http://cleantechnica.com/2013/12/23/mit-team-shows-how-graphene-could-work-in-quantum-computer/

I guess collisions wont really matter in the future with preimage resistance.