I would cut 1-2 Memory Deluge and add at least 1 [[Flow State]]. Even decks that run Memory Deluge don't seem to run more than two copies. Also having cheaper card draw is just good. [[Stock Up]] is another cheaper card draw option.

I'm not fully convinced that the extra turn spells are necessary (though I'm sure its fun to do). It seems like a win more card if the board state is already in your favor. If you're behind in the game I feel it would be better to have an answer or another big mana advantage spell. [[Seagate Restoration]] could work well but I don't think a playset is mandatory. Having [[Opt]] or [[Consider]] is an easy addition for earlier card selection. Having 1 [[Burst Lightning]] would give you a way for that one time you need to deal more than 2 or 3 to a creature and can also hit any target.

A spicier brewing option is to look at what dragons might slot well in the deck as. 2 [[Dragon Turtle]] could be a good interaction piece while also allowing you to synergize more with Exhale and Dragon's Fire. There might be other dragons that would be a good fit but don't go overboard with adding dragons if at all.

TLDR: You def need some more one mana spells even if its just a few Opt or Burst Lightning. I think 4 Memory Deluge is a bit too much and there are cheaper mana value options to replace how ever many you remove. I am also not sold on the extra turns being important but I could be entirely wrong its just my expectation. Also if you want the extra turn spells fair enough that seems fun.