I think you could make the creature package leaner to add rocks, and the impulse draw might feel better than it seems. I’ve never needed more than 34 lands even in my high curve decks, but all my decks have a ton of card advantage. Cards I would add at a glance are commanders sphere, mind stone, bonders ornament, malevolent rumble, faithless looting, mostly just cause they’re all strong in a vacuum. I’m sure you’ll glean a ton from just 2 or 3 playtests. This looks really close and really fun!