Topic: Future cosplayer seeking advice about my first costume(s):)

'Sup Fett fandom, 
Looking to fulfill my Fett cosplay dreams and was wondering:
I know costumes are mostly for show, but it would be so peak if they could function somewhat like they actually would in-galaxy - especially the helmets. 
So if I were to purchase, for example, the cybercraft Boba Fett helmet and maybe the Fennec helmet, is it possible to mod them so that they could function as airsoft helmets? If so, what vendors would be good for that? 
It's definitely a beginner question but I would be so thankful for your opinions:)))