2 LaDD 3 Caius and 2 Raiza are enough tribute monsters in this deck. So as Train said
-1 LADD
-1 Raiza
-1 Mobius
Still, the deck is missing something very important. When you look at it, what do you see? Do you see a consistent deck which would usually get its stuff going? I dont. Why? One of the reasons is because you have way too much monsters and low backrow. Thing is, your only move in this deck is tribute summon and benefit from it. Since today negating summons is one of those things all decks run, one negation of tribute monster would mean disaster for ya. You would be open for attacks. Yes you do have 5 monsters which would stop those attacks but note that 2 of them will still get your LP damaged, and 3 faders will not be always there for ya, not in this slow deck. So increasing backrow would be important. At least at the level where you would have solemns and a torrential if nothing. I'm not so expert in frogs and their ratio here, others will help you in that but this ratio needs more testing and improvement from what i see.
Now to draw engine. Duality will not stop your tribute summon, but it will stop your frogs etc. However you do have 5 monsters which would summon in opponents turn so again you do have choice. Also Soul Exchange. You can run PoD and get many advantages here with it. You need it in fact because this deck is way too slow to be good.
Next thing you could try is to benefit on other field called Cyber Valley. I mean you use Treeborn, Fader and many other fodders for it. You don't have to remove treeborn, instead 3 E-con will get you to remove opponent monsters, big ones. That can be one devastating engine which looks so poor but does wonders in means of draw power and removal of your opp monsters. Also One for One would have few more targets
This would also mean to cut down a bit your tribute ratio for this, to balance between draw and your ace monster combos.
Now, think about these things all of us recommended and try out what do you think its best for now. Post it again and we will see what we can do more about it.