Oh it's going to be a Jango... just the Open Seasons version. To be honest, I'd consider an AotC Jango but the ear caps on my helmet aren't correct and I'd need the correct version. With OS Jango, I think there's room for leniency on that detail.
Also, there isn't one of these in my garrison and only two in the legion. We have a couple of Boba's and a Jango already so this won't conflict with what someone else might want to wear... but if I had a Jango helmet, I'd definitely consider going for it. All about the finances and availability.