I wrestled with the idea of having the coolant outlets machined in the side of the plate but I decided against it for the following:
a) The main plate is only 3/4" thick. If I wanted to put fittings on the edge of the plate I would have to use smaller threaded hose connector. I didn't want the fitting to be a flow restriction. I used 1/2" NPT connectors. The final machined wall thickness on the top and bottom would be too thin for my comfort. I was envisioning a possibility of slight deforming of the thin walls when tapping or screwing the tapered fitting into soft aluminum. The plate cap and chill plate must remain absolutely flat to maintain a positive seal. When the bolts are tightened the chill plate and cap will be absolutely flush with each other, almost appearing as a solid piece. I did not want to see the NPT thread forming a small bulge when driving the fitting in.
b) I could have bought thicker 1" aluminum but the cost rises exponentially as the thickness increases.
So after debating it in my mind I decided I was going to do one of two things. I would put a number of vibration dampening spacers under the unit to afford me space in my final mounting solution (as shown in the attached photos). I was also thinking of just tapping some bolts into the edge of the chill plate and mounting some beefy aluminum L shaped stock.
Anyway you are correct, it is not ideal placement for the hoses but I do not have an infinite budget for this project so it seemed like a good compromise and it in no way effects performance. In the long run it may turn out to be far cooler this way. For the time being I can live with it not sitting flat on my workbench. I am more concerned with function over form. Sometimes that is how it goes when designing on-the-fly