im pretty sure thats not the worst statistical bet there is. id agree parlays are, but ml parlays are completely different animals. i know of a lot of good cappers that make good money playing ml parlays. double digit favs usually do win straight up even if they dont cover, so with a little capping you should be able to find a couple that will win.
i like that you have all home teams, it looks good. i think you could probably add another one or two to reduce the juice even more.