Good idea to ask.
Killonious of Alter Ego Armory on Etsy says most of his designs are MMCC approved, so you should be good to go with the Heavy Assault customized chest and the thigh plates.
I would look for an official opinion on HoskWorkshop's body armor, but I'm pretty sure there isn't anything disqualifying about those particular pieces.
The helmet, not really sure about. I saw a cat-mandalorian helmet recently that may not be approvable, and this has a similar idea; if you were to use more of an
Ursa Wren-style helmet, or something along the lines of
The Shrike, that might be a little safer.
You'll probably have to wait for an official or App Team opinion, but that's my two credits on the topic.
