I'm building a 20" T60 to go along with a pair of 15" Peavey SP2's. I might build a second T60 at the same time and load it later though.
So far I've bought a Lab12 speaker, rubber feet, chevron corners, and 4pole SpeakOn plugs (all off amazon.ca). I still need to pick up plywood, seems like its going to be around $45 a sheet for 5x5 BB, I need 3 from what CutList says but that's not including braces. I also need to buy DuraTex(deep tint for colouring?), gasket tape, and castors.
What kind of castors should I be looking for?

So far I have my setup done other than the sub,
I bought a driverack PX, I basically stole it off a guy on kijiji for only $180! with the mic too!
I got a knockoff Yamaha P7000s off kijiji for $200 too, seems pretty heavy duty and works well. I'll see how it does in the long run.
I got the mixer and sp2's for free which started this whole pa system.
I'm gunna be building an amp rack to to hold my mixer, driverack, and amp too.
All the pictures are in an imgur album until I figure out how to insert an image or size it down.

http://imgur.com/a/w1Bud
Question: On the last picture of the Lab12 in the album, there's a cardboard-like piece taped on top of the speaker. Am I going to be using this in some way?
I'll update again when I start building, not sure when that will be unfortunately.