You’re stock, so as long as you pick a well respected tune provider (i.e. not BAMA), you should be okay.I might consider a tune after if it doesnt work out. Im not so confident in email tunes though, seems dangerous as there so many variables for adjustment and the guy/gal doing it could fat finger a number or depending on their workload for the day they might make a mistake somewhere. Maybe im overthinking it but a small mistake that might not have symptoms during use might cause wear and tear damage down the road.
Have a look at this thread: Who Tuned Your Mustang
I’d like to give AED and Decipha a try, but it’s way too expensive to “Test Drive” several tunes once you’re on a boosted setup.