I believe that you would get more value from
Scar Soul Mage at the one slot in place of the Ghitu Lava runnner, Also consider Grim Lavamancers they are powerful wizards in this set up as well esp if not playing snapcasters. Been specializing in this color set and enjoy seeing ideas bloom. I think it is grossly underrated in the competitive realm. Its been going 4-0 for me at my lgs pretty constantly. Good luck and have fun.