(I'd encourage you to check out the sheet, if you haven't already, if you want to see all of the individual card prices that make up the expected value.) Secondly, Double Masters is a massive set with 40 mythics and 121 rares, and especially considering the spreadsheet already lists everything out, it's just not worth putting every individual price into this article
You could chose to play only one half of the split spell
Probably the best shell is similar to the Turn Two Tokens deck we played on Budget Magic a long time ago, with Kuldotha Rebirth giving us additional ways to go off on Turn 1 and make sure our Bushwhackers are lethal
This deck's theme has been done to death by now, but Quick Draw is one of the very best takes on it
Creature removals should be slightly more than artifact and enchantment removals while countermagic is always very strong
His Master Tactician ability even works with noncreature tokens