I'm finally to a point where I'm moderately happy with this deck. The power base is wonky, but it's 5F so that's to be expected. You should be able to play most of the deck on curve in most of your games.
For your opening hand, you'll want Time or double Primal. The earlier you can start drawing cards or fixing your mana, the better. Look to play Trail Maker or Wisdom of the Elders on curve. If you can't, it's probably better to mulligan. Don't be afraid to play House Alliance depleted. The only double influence you need is Primal.
The ShiftstonedEternal Power Calculator is a deck-building tool that visualizes your odds of drawing enough Influence and Power based specifically on the cards found in your deck.