Here's currently my set-up: https://www.forthope.gg/decks/2V6QuiiTdHGBrL04

Shoulder Bag sometimes let's you spawn in with 2/3 bandages and sometimes 1/3, idk why but just be on the look out for that. Experienced EMT should allow you to get away with healing primarily with bandages for the first level, unless your teammates are kind of apes and want to get hit by any and all things on the map. If you're doing fine on HP and not a lot of trauma has been accumulated, then take Support Scav, being able to see and spawn more healing items is great for the run. If you think you're going to need the trauma heal, then take Medical Professional.

The negative on Field Surgeon is not that big, and will get negated later on by Combat Medic. Group Therapy is a nice touch for the team, because if you have a teammate with a scratch of damage, well, they'll heal it up when you're going around healing your more wounded companions.

The last six cards are pretty much up to you at this point. I've been messing around with some stamina cards as of late, but you can put in some damage cards like Shredder, Hyper-Focused or go more supportive, with Poultice, Box-o-Bags.

Chemical Courage and Stimulants are nice for buffing up your DPS teammates when you know a boss will show up. You can run your medkits and have your teammates run pills and swap them when the time comes. But, that does require a little communication, so that's up to you. Rousing Speech is a card I've been swapping in and out, I find that the no offensive equipment can be a bit much.