DCC system test track?

[deemery]

I ordered one of the DCC-EX pre-assembled units:  https://smarthobbyllc.com  (Note the order button doesn't work correctly, just send Jack an email and he'll send you an invoice.)  

Since I'm nowhere near ready to actually run stuff on the layout (I want to get enough scenery done to prevent any derailments from tumbling to the floor). I'm pondering a test track setup for this.  My initial thought would be to use cheapo Atlas snap-track in an oval, with a passing siding along the curve.  Outside edge would be 18", inside would be 15", so I could easily check how locos run on 15" radius.  I'm sure some won't make it.  And inside that, I'd put an HOn30 loop for my little lokeys.  

But since this would be a 'start from scratch' project, I'd be interested in thoughts/suggestions.

dave