Hi everyone, I am making the leap to a rack system for the first time ever. Mainly what I am needing to know is how large a rack I am going to need and what's the best way to mount things. I am estimating that I'll need a 4 or 6 space rack (the smaller the better). So here's what this will entail: Line 6 M13 (how do I mount this and how many spaces? A rack shelf and velcro?) Voodoo Labs GCX and some pedals (1U for the gcx, 1u for the rack shelf for the pedals? or are pedals typically too tall and need an extra space?) I am sure I can figure this all out on my own but thought I could gleen from TGP'ers experience.