Rosewill PSUs are kinda not famous and branded such as Corsair, Antec, CM,.....
So it might not deliver the required wattage.
and the 620W Antec will run your CF, but it will be tight for your needs.
Never go cheap in PSUs, it could fry out all your system once at a time.
If you don't have the money right now, just wait until you save some unless you want to experience performance issues and serious disappointing problems.
It's up to you at the end.