I would recommend the Pro and get as much RAM in the system as you can. 8gb is fine, but 16gb is ideal. Now you also have to make that choice the first time because you can't upgrade anymore, so I'd get 16gb. I use a 13" air at work w/ a 27" monitor and have no problem with web design work in PS, but photography work can be more intense so the initial upgrade in raw cpu power that the pro has is necessary. So definitely a pro, definitely get as much RAM as possible (16 is ideal), and minimum 256gb ssd (I recommend 512gb).