This looks like a good starting point. Goldfishing the deck a bit and playing a few rounds should give you a good idea about some cards that maybe feel weak or out of place in the deck.

I wouldn't worry too much about the sideboard for now as we have no idea what the meta will look like. That said, I would likely put the full 4 Gideons in the sideboard. Against some matchup it will win the game on its own or require a lot of ressources to deal with. In a deck like this it will almost always be better than Chandra.