wow… looking really nice 
You cannot go wrong with modo… I’ve been a Maya User since version 1.0 but 2 years ago stepped over to Modo… best investment I ever did… Modo is now my weapon of choice when it comes to modeling.
Great news on the landscape contact since I seem to have a problem with that.
I migrated the entire MM toolkit to a testscene with a landscape only… and the only thing I have trouble with is the T26.
The M113 and ripsaw work fine on a landscape, but the t26 does some very weird things…
Added all the custom collision channels and fixed it in the Blueprint… the weird floating is gone… but the wheels act really strange on a landscape.