Bed & Mattress Design

Thanks again for all the great help. As you can see in the other threads, work is continuing apace... I need to get some pictures posted!
I got a lot done over the weekend and am racing towards a labor day campout!
I want to order some gear to make the bed. I plan on eventually putting in a murphy bed in my 6x12, but we'll start with a simple frame and I'll put the hinges in later.
So, two questions:
- What thickness plywood did you use under your mattress? Will 1/2" cut it?
Follow-on question -- did you drill any ventilation holes in the plywood, or reinforce it with cross beams?
- What thickness foam did you go with? I'm looking at ordering from http://www.thefoamfactory.com/ or some similar place (it looks like there's a bunch with similar products) and am torn between 3" of cheap foam plus a 2" memory foam topper, or 5" of their mid quality foam.
Thanks! It would be nice to have the bed put in by labor day instead of camping on cots!
I got a lot done over the weekend and am racing towards a labor day campout!

I want to order some gear to make the bed. I plan on eventually putting in a murphy bed in my 6x12, but we'll start with a simple frame and I'll put the hinges in later.
So, two questions:
- What thickness plywood did you use under your mattress? Will 1/2" cut it?
Follow-on question -- did you drill any ventilation holes in the plywood, or reinforce it with cross beams?
- What thickness foam did you go with? I'm looking at ordering from http://www.thefoamfactory.com/ or some similar place (it looks like there's a bunch with similar products) and am torn between 3" of cheap foam plus a 2" memory foam topper, or 5" of their mid quality foam.
Thanks! It would be nice to have the bed put in by labor day instead of camping on cots!