So you want to play OmniACE, but you don't want to buy 20 dollar wargs and 45 dollar melgas? I've got you. Pad your topend with a couple omni variants; make up for the lack of consistancy with better highroll performance. Same with the win-more tai & matt, and then a pair of options to help clear up wide boards. You should probably be on 2 crimson blaze, but supreme cannon is cute.
You won't get your gameplan off quite as often, but when you do, you'll get it off hard. That's basically the same thing.
UPDATE: Turns out the mandatory greymon is also expensive. Damn. Go hit the blackjack tables, make a quick 100, and drop it on tcgplayer.