Consolidation + Licensing Concerns

Currently have two completely seperate instances of SEPM going, with clients reporting repectively. 

Enviroment 1 is 12.1.6

Enviroment 2 is 12.1.2

Need to consolidate these instances, looking to bring all the clients on Env 2 onto Env 1.

Currently, Env 1 has licensing for 180 seats, and Env 2 about 500 seats.

Need to have both enviroments online for a period of time, as the migration will span over a week or two; but also need to bring the licensing from Env 2 to Env 1 to begin migrating clients.

Can I have two managers using the same licensing, online at the same time?

Any other reccomendations?

Thanks!

Kris