I am currently doing this. I have a ARE pan which I purchased through Donald at GT Technics. I can highly recommend contacting him as he can assist with pan and design of the layout, etc. I initially looked at setting up on the left hand side (your driver's side) of the engine as the outlets from the sump pan point in this direction. However this means relocating the power steering pump and alternator. While this is not hard, as I am removing the air-conditioner compressor, and I am currently looking at mounting it on the right side in place of the compressor. It seems to be the most sensible, particularly due the the orientation of the pump I have. VAC mount their kits on the right.
I will be mounting my engine upright for greater room for headers. I have had some plates laser cut for engine mounts and made a MDF plate to dummy mount the pump to work out a position to align pulleys.
Here are pics of the sump pan:


I am thinking about this position:

Engine mounting plates:
