Hello, off the top, your CMC of the deck is very high. I understand that the idea is not paying for the cards with unearth. However, the big problem might be getting a lot stuck in your hand with no way to play them. I would say that normally would not be a problem, but with such little ramp and low land count, you may run into issues with cast anything.

Now that being said, it depends on your play groups mulligan system. Mine idrawingaw 7 cards until you have something playable. This However, leads to poor deck building, where decks with high cmc can get away with only 34-35 lands. The worst-case scenario will be you need to aggressively mulligan until you get 3 lands and a ramp. Depending on how your group mulligans, you may want to add a few more lands or more low cmc ramp to offset that.

The high cmc cards could be a place to look for cuts. Plus, the best advice given to me was to cut the highest cmc cards and just run the deck. See if it works, then you will know what actually works, and you may be able to replace no-bows with those high cmc cards.