First mash tun build question

I'm building my first mash tun and just have a few questions. First I'm using a 52 quart rectangle cooler. Is this too big for 5 gal batches? Second, I'm buyiNg the cooler kit valve from bargain fittings but I'm going to use 1/2" cpvc from lowes. What pieces do I need to connect them. Thanks

Cooler will be fine for 5 gallon batches, especially if batch sparging, however you could probably fly sparge

If you can, just wait until you get the fittings. When I built mine I just used a 1/2" brass nipple and attached a 1/2" CPVC adapter (screws right on and accepts 1/2" cpvc pipe)

I don't have one of these cooler conversion bulkheads, so if you can't wait til you get it, I am sure someone else can answer your question fully.

Like this one.
http://www.lowes.com/pd_23765-322-50405N_0_?productId=3132997&Ntt=1/2

If you can find them they come in different flavors too. You can get the threads in brass or copper if you would like.