Need to make a Steel storage rack... any suggestions?

[CGCINC]

if only 12 to 14 out of wall just use pipe or cheap angel iron , most stuff will be 20 footer so will need 4 supports to hold long 20 footers

Actually looks like I can do 20" total from the wall so it will be an 18" arm. I also have my stock cut in half at the steel yard, one cut for free, so it's 10'-12' sections. I plan on 3 uprights.

I would use "I" beam. Very sturdy, and lots of surface area to weld it on. How thick and how big is the heaviest pipe you will put on it?

I thought about I beam but I think that's overkill for me.
I will have maybe:
4pcs. of 2" square @ 10' 11ga.
a couple 2.5" square maybe 11ga.
few pcs. of 1.5" square 11ga.
some flat stock, angle...etc.
then some Aluminum but not much