Heater placement in 30x50 pole barn

[ksarauer]

My initial plan was to purchase 2 75k unit heaters and place them in the center on one of the 50' walls, installed at a 45 angle, pointing at the opposite wall corners.
However, being the horizontal vent kits are ~300 each, I'm considering just 1 heater, but not sure which direction to face the heater, do I point it at the wall straight across, or at a 45? Or inline with the wall?

my options are...

 

[Jackfre]

It depends upon how you are going to use the space. Do you want the heat source at one end or the other depending upon use? I would put it blowing across/along the N wall. You want the one to create a convective loop in the space.One 75 should be sufficient for 1500 sq ft. Live with it and see