I am getting a horizonal 3 ton Climate master Tranquility 30. For loops, I am using four 600’ 3/4" ID SDR9 they come precharged with antifreeze. I am by Greenville SC we have red clay here. I am going to put the manifold in the crawl space. Is it better to drill through the footer or go under it? Our footers are not real deep here. I have a small tractor I was going to dig the trench with but I did a test dig and it took way too long. I can use it to fill in the trench after it is dug. My neighbor has a mini excavator I think he will rent it to me. I think it has a 2’ bucket. The other option is I can check into a track hoe that would most likely have a 3’ bucket. I am planning two 300’ trenches 6’ deep. Horizonal 4 pipe. Do you pressure test the pipe before you back fill the trench? I really like the Trilogy 45 thermostat do you think they will offer one like that for the Tranquility series? I have been reading lots of post on here some great info here.