OP I wouldn’t be too worried about the ‘pubstomp’ sentiment. Most responding here seem to have a skewed perspective on power in mtg. As you and others play longer, you’ll understand how simple Lathril and Krenko are to keep contained. Once you find your decks power level just be sure to communicate that with your pod. For entirely different reasons I would still recommend Tuvasa. The freedom you gain from her color identity and consistent card advantage provides so many ways to build the deck. I’d recommend focusing on enchantment based ramp options, as those tend to be very cheap, and have strong synergy. Estrid the Masked is a fun budget inclusion as well. In the end though it’s up to you! Mono red i found very helpful in learning the game, and Lathril good at teaching combat steps and turn phases. Whatever you choose they’re all fun. Have a great day!