Since last week, I've learned a lot more about CoronaSDK, Lime, and Tiled, and our first prototype is nearly playable. The most I've learned from this so far is the animation, art, and math aspects required to develop a game - this has all been much more than what I'm used to doing for a business application.
Been chewing through Lime's tutorial here: http://www.justaddli.me/tutorials.php. It has been extremely helpful and has made me feel that Lime has been one of the best $20 I've spent!

Update: Prototype I complete.


Next step: hash out the game design document of where to go from here, and also the programming architecture document.