I’d recommend a Class Designer in this case then,
In Island settings make the Default Class as Class Slot 1, then players automatically become this class on entering map. So theres no need for a device to make them this class.
Drop in a Class Designer Device somewhere and set it to Class Slot 1
Add Weapons and Items into the Item array, to give the players what gear they spawn with.
Check through all the settings and set them to what you need, they are pretty much the same as the player options in Island Settings (Class Designer settings will override Island Settings).
Disable the item granters and you should be good to go.
Possibly in your next project when you get familiar with class designers you can set up a few and have something like a Soldier Class, a Medic Class, a Heavy Weapons class etc and configure thier item & settings to suit like movement speed, health, glider redeploy etc etc