That is quite excessive, not going to lie. Counting in your maybeboard and sideboard, which by the way isn't a thing in commander outside of Companions, you're asking for help on figuring out how to cut out 355 cards.
You're going to want to work on your sorting a bit. While you do have a ramp section, you don't have one for draw or interaction. Indeed most of your sections are quite broad, X Synergy, and in some cases redundant, Zombie Lords and Anthems.
Generally a deck will be set up like so;
~40 Lands
~10 Ramp
~10 Draw (Draw, tutor, etc.)
~10 Interaction (Counter, protection, removal)
~30 Deck goal cards (In this particular case; Anthems, token generation, combat tricks)
Numbers can obvious vary a little bit, and in the case of mana should depending on your average costs.