Looks like good fun. There's a lot to be said for building a table top style layout from off the shelf items. Progress is a lot faster .
As some will know, I am using Rocoline with track ballast for my shelf layout. These points have live frogs and in the embedded track, they are already wired to switch polarity when the point changes. The points are non isolating so both roads are always live.no track manufacturer has made the necessary development leap AFAIK...