Donya - you sound really excited to use the pool, a lot better than the outlook last year at this time!
At the rate things are moving here, it looks like I'm going to have to re write the AG pool construction Article that Ben so thoughtfully pinned up top since it died with the old forum - more work - oh well, I'll get to it!
I will also be using composite, TREX, I think it's likely the canadian equiv of timber tech since it also comes in the 2 sided panels - I will be doing the hidden screw system from underneath and will probably picture frame it in a darker color then go with a dark brown Aluminum railing on top.