I'm on DL184 tomorrow from JFK-CDG which I'm assuming will depart from T4. Typically I check in at T2 regardless if the flight is in T2 or T3, but was wondering what my best option was for this flight. I assume you can check in for a DL flight in T4 even though it isn't currently a DL terminal. If so how is the process for a DM? Easy check in? Does security have medallion lanes? What are my options in terms of lounges. I've heard Oasis is nice, but am unsure if it is on the right side of security.

Thanks for any help.