(?) On Mutiple Clones In one bucket.

Hi there guys. I was wondering if you could help me out with this question? I run the Ebb and Gro system with expandable 2gl buckets. My question is possible if not safe to grow two clones in each 2 gl bucket? Or for that matter could I grow 4 clones in a 5 gallon bucket? ( they will go into the ebb and gro system after they veg) My issue is mostly, (like others) size of the room and money. I wanted to try a SOG this time around but my lack of funds have me thinking of all sorts of ways to figure out this dilemma.

Since we are on the subject. Is there a pratical way of turning the Ebb and Gro system Buckets to an Ebb and gro table?
Thanks in Advance