I actually talked to him about half an hour ago now. XD We've agreed that using that machine is fine, on two conditions; first and foremost, that you do make sure to follow the trade-off of maneuverability for firepower. Secondly, and we also agree that this isn't likely to be an issue but we just wanted to make it clear, we'd rather that you didn't eject the cannon pack during a battle. That's the sort of thing that should require tools and time to switch out.

Other than that, we've absolutely no issues with you using it. :)