"ALL IN" Co-Op map
 

I been wanting to make an "ALL IN" Co-Op myself, would anyone be willing to help me out if I get any questions along the way?

My idea for the map is just a basic Co-Op of the map:
- Co-Op (2 Terran players)
- Difficulty Selector (Casual, Normal, Hard, Brutal)
- Having both the Air Version, and the Nydas Worms version in the same Map
- Both Players would be shared units, not individual.
- Player have access to all mercenaries
- Player has all Armory upgrades!
- Players Choose Lab Research via Science Station or possibly have all
I Need help on that last part, and possibly other parts such as adding a special harder then brutal difficulty called "Fatal". Le me know if you interested. I'm not looking for it to be #1 Co-Op map, just a CO-Op me and my buddy can play.