Spray Bar Position

Where should I put the spray bar to get the best flow in the tank?
 
At the side would be more aesthetically pleasing but I might struggle to connect the bar to the outtake pipe due to lack of space.
At the back it's more obvious but flow is more important.
 
Also the intake pipe looks rather short, will this be okay or should I try to lengthen it? 
 

Picture one on the left is best IMO. 

I agree on the left is best

As long as you get a decent rolling flow, it doesn't matter. If you want it on the side because it looks better, you could supplement it with a korilia if the spraybar on its own isn't enough

Ok cheers I'll try the left and see how it goes!