Yeah that works lol.
Technically you can one shot him but like the other guy said. You'd need like 4+ dual cards. Assuming this would also require a metalgarurumon x and few reds.
Me personally? I like using reducers! And the tree god. Though I'd swap one of the attackers for knightmon double attack or boltmon. Tricky thing is. With double attack imperial dramon damage will reflect like a 1000 back at you but since you heal with his attack. Should be fine without bolt Mon. But you could play with it.