Planning on building a custom MFT mobile cart. I currently have no need for it to be portable, but do want it mobile. Here is my concept. I wanted to build something with at least one 90 degree face with dog holes, then went a bit overboard. I figure you can't really have too many holding options, can you? Still...is this more hassle than it might be worth in regards to drilling all the holes? Overall size is 62.5 L x 36 W x 36 H.