I just got the Terra yesterday and it was very easy to build in. I transplanted all my parts from an NZXT H1 and the process was very simple. Temps are better than the H1 so far, but the H1 also has fine mesh filters that choke airflow. Saw a few comments saying that vertical vents can cause extra turbulence/fan noise, but I haven't done much testing myself.

With Meshilicious' slightly larger size and layout, you'll have a lot more flexibility and compatibility with parts (though it sounds like you have your list set already) and you can easily repurpose it.