I searched the forum for touring wheels and didn't see anything. But I know I have seen a thread about wheels.

Here's my thing. I need some wheels to put on my new project bike. It's purpose is for small loaded tours, commute and next year ride my new youngun around. I have looked at wheels on the web and I have no idea what is a good rim, wheel or what. I am interested in building some wheels, just to do it, but is it worth it? Here's what I know...

I want double walled rims.
I want 36 spoke.

Here's what I don't know...

Hub sizes. (I'm sure I can guess, or just measure one of my other hubs?)
Hub quality.
Spoke size.
Is it cost effective to build my wheels?
Is it possible to find a good wheel set in my budget? (Around $200-$300)

Like I said, I kinda want to build the wheels, but not sure if I would be just spending more money doing so.

I know this might be a redundant thread, but thanks for any info.

Thanks in advance,
-j