A quick response - 2nd try at the midplate, because I've changed the bottom compartment - and have a much tighter tolerance on where the holes have to go.

Yes ... I'm going to have to watch the heat on the TMS-200. But, it's going in the back of the case - bottom compartment, where the PSU cover is cut out with mesh. Also, the bottom of the box will be cut off. Nice thing is, I can put a temp probe in the box to check the situation (just thought of that - thanks). We'll see.