Went with going post tin with the deck. Seeing how things would work. Depending on the deck you face is why I have the side deck like it is. Without those cards that help negate or stop searches, your chances of winning are a bit harder. From testing the deck out, I did notice that going just pure DM didn't work as you do need cards like ash blossom and whatnot.
Basically you want to get as with any DM deck, DMC, Eternal Soul on board and to protect them from destruction. Getting Dragoon helps with negating and to destroy cards. Magicians' Combination for an extra negate, Destined Rivals to stop monster effects. Having Solemn helps with stopping monster summons or a magic/spell effect. Magician Navigation is more used as to get to the grave for an extra negation. Rarely used to actually summon Dark Magician. Nibiru helps with stopping field swarms and such.
Any tips would be very appreciated as I do know the deck can still be improved and whatnot.