Are the .step files available? Would like to shed some weight, print time and heat. My single Ender3 has to run slow to be reliable. Fusion (free) loves to hang when converting mesh to body, can’t handle all those triangles 
Air flow sounds good and heat dissipation in general, saw other posts where folks encountered drivers overheating causing jobs to unexpectedly pause/fail. Bought couple of Noctua fans via your link, cheers!