I would choose a deck where you could turn your otherwise disadvantage into an advantage:
- If you loose moxen and lotus run main board Stony Silence to punish those who do (and that will mess with both Shops and various storm variants too)
- Without fast mana you potentially loose the ability to play many spells in the same (and early) rounds. Punish other decks that thrive on doing that - I'd go with a Human based deck where you have access hatebears that tick that box. If you mix with Spirits you have access to Thalia, Spirit of the Labyrinth, Eidolon of Rhetoric, Eidolon of the Great Reveal, etc., etc.
Humans are still vulnerable to storm so I typically run Spirit Guides that can help get that bear on the board in your first round. They can double as a stick later in the game.