Assuming your age is 33, as shown in your profile, and that you already have some siginificant time in type, it is bettee to go for the upgrade straight away. Even if the upgrade at Middle East was possible it would take some years to come, leaving you closer to being 40 than to 30 years old. Should anything happen that would prevent you from passing your command assesment (I don't know, perhaps a grade 3 in a recurrent in a certain airline in the gulf) would make you look like the typical old, high experienced, but unsuited for command FO that nobody wants to employ.
Go for the upgrade, either in your current outfit or at FR, your career will thank you when you push 40.