Your track is looking great. Don't forget to clean the connections between the track sections and add a couple of power taps on the opposite side from your power sources. I have a slightly larger Revell track and found that adding the power taps and cleaning the stainless strips with Inox really helped the overall smoothness of the track.
My track is about 65 feet from the Pacific ocean and I've found I have to clean the rails about once a month in order to keep the conductivity even all around the track. Wouldn't trade the location but salt and moisture don't help when conducting electricity.
Really like the plastic. I have several pieces of Riggen track mixed in with the Revell; same design, works good just black in color instead of the gray. I got bored with the track last night and took out a whole section of turns, put in a straight away, added 2 cross tracks and 2 chicanes and now have a whole new track. All in about 10 minutes. Can't do that with wood.
I have quite a few extra pieces. Let me know if there is anything you need. I might have some of the 6 inch sections. I'll look when I get home tonight and pm you.
I like the look of yours
and may build that next if your works out.