Hi,
I would use a tray one size bigger than your film, and don't skimp on developer. You can squeeze by with 4 oz. of developer for one sheet of 4x5 in a 5x7 tray, but the level is very low; I prefer to use 8 oz., even though it is a bit wasteful.
I personally avoid the "shuffle" method because I am no good at preventing scratches, no matter how careful I am. But many people swear by it.
I would also agitate by lifting the film out of the solution and draining it a different way each time, as opposed to rocking the tray. Rocking works fine, but lifting works better IMO. Try to find a tray with a ridged bottom, if possible. And wear gloves, even though it is a PITA. Even if you don't have any reactions to the chems, they can develop with exposure over time (kind of like poison oak; the more you come into contact with it, the more allergic you get); and no photo chemical is actually good for you to touch, even if it won't necessarily hurt you.
IMHO, Nikkor tanks and hangars with replenishment is the way to go if you will be shooting lots of sheet film. D-76 is a good choice for this. Does CSULB have 1/2 gallon tanks and hangers, or are they only set up for tray development? I've heard their photo department is very good; I would be surprised to hear that they do not have Nikkor or Kodak tanks and hangers. Bring your own two quarts of D-76 to fill the tank, and another quart of D-76 replenisher, and you are set.