First of all landstill has to have 4 factories. It is your most reliable kill.Second you dont need 3 mountains, you should only need 1 and that is only if you see alot of B2B and bloodmooons in your meta. also you should cut the brainstorm it is a good card but not just a single one, you should cut it for a fourth fire and ice.Fire and ice is key to early game survival, which landstill unfortunately needs all the help it can get.also cut the hesitations for mana leakAnd cut one misD for a nevs disk(believe me, the 4th helps out a whole lot).Besides that the deck looks pretty solid. Here is my landstill that i went 3-3-0 at waterbury with.

1 library of alexandria
1 lotus
2 moxen
4 conclaves
4 factories
4 island
4volcanic
4 wastes
1 strip
2 polluted delta

4 mana drain
4 fow
4 mana leak
4 fire ice
4 nevs disk
2 stifle
1 teferis response
1 recall
1 time walk
4 lightning bolt
4 standstill