Your situation is identical to mine. I caved and signed up for the "Best Effort" and must say I am pleased so far. Now I am not knocking down the 150-200mps that some are getting, seems most times I check its around 30mps but coming from hot spotting ATT devices thats more than triple the speeds...
Please update when you get a path forward. I have the same issue and want a path forward before I have my concrete pored. I am considering, raising entire building, truss mods under the lift or addition on the end with the needed height. I too will be pull through with the lift on the far end.