Head removal help

Also, I have all the plugs out currently, have read where some say only take out the plug from the cylinder you are working on and others say pull them all... one way better compared to the other?

Thanks

For a compression test? Pull them all, ideally engine warm, pull all of the plugs, block open the carb, disconnect coil wire, battery charger on the battery.

3 to 5 revolutions per cylinder recording the highest reading. Followed by a wet test.