In general, the standard practice for all resin based stereolithography machines, both laser and projection based, is to rotate the part, usually something like 10-40 degrees in both of the X and Y axes.
It’s relatively unlikely for any bottom up based printer to be able to print something like a solid cube filling the whole build area.
The less per-layer surface area you have, the easier it will be to print.
That being said, I have printed some pretty large surface area parts flat, like this 76mm x 127mm letter press plate:
http://www.kudo3d.com/forums/topic/letter-press-plate/
However, I would not recommend that you do that type of printing as your first print. You need to gain an understanding of how to create settings that match the shape of your part that comes from starting with easy prints and working your way up.
