If you have a job option right now or a prospective job a year before graduation then go for professional program as you would be able to work and study at the same time. But if you do not have any job options right now and not planning to soon and there is a prospect of good assistantship and full tuition waiver, then full time student life is much better.

My suggestions is also to check the career department of the school you are attending and where all the students are getting places, international students and their placement history, etc as these will help you in your possible job landing in future.