Quite frankly, while Full face masks do have their advantages, it would not be a wise purchase for a new diver. There are many divers who have never even touched one! Full masks are typically used when the diver cannot touch the contaminated water, the diver cannot hold a mouthpiece in his/her mouth, or when doing extremely long dives to increase diver comfort. Aside from the added expense (mabye, mabye not), these face masks are typically used with underwater communication, and a new recreational diver would probably not need something this elaborate. Quite frankly, practicality aside, you'd probably look a little odd, donning a full face mask upon entering the quarry, but---to each his own! I would get very used to the regulator mouthpiece, just because that is the overwhelming standard for non-professional/commercial divers. I would go for it, though, if you want to do full face mask diving, Do it!
But, ultimately, as your main piece of gear---nahh. They are REALLY COOL, though.
(for your drooling pleasure)
And, dont forget, this requires a re-look at your gear failure/OOA training. What if the facemask malfunctions? Will you carry a second one? Will you have an octo? If you have an octo, now you need another mask. Can you do all of this competantly? With practice, probably, but why not get comfortable in the water first? Expand your training---then eventually move to the mask.
http://www.scubacenter.com/scubacenter_onlinestore/full_face_masks/Ocean_Reef_Neptune_Full_Face_Mask.htm