First of all,well done for stepping up when others wouldn’t.I did the same 8 years ago and haven’t regretted it one bit.I would go for Copa Mundials as you will be spending a lot of time on 3/4G pitches and as such a screw in/ soft ground stud will be no good,or not permitted.As you are not playing,if your game takes place on a grass pitch,it doesn’t matter so much that you are wearing a moulded stud,so they are more versatile.They are tremendously comfy as well.Good luck with your coaching journey Blue Matt