Talking [Q] Can I upgrade i9300 4.1.2 rooted to Carbon rom 4.4.2 using just mobile Odin pro?

Mine is an i9300 rooted and running 4.1.2
I have downloaded the carbon rom 4.4,2 meant for i9300 and also the gapps to the phone' sd card,
Can I upgrade the phone via mobile Odin pro only? I don't have access to a PC or a mac.
Or is it better to go via CMWM?
Don't want to mess up my only phone