We have a Carrier 50ZHB042 on about 60′ of buried 12″ fiberglass round pipe (RA & Discharge)(long story).
Supply static <> .89 with 780 cfm with no filters.
There is no way this unit is going to push enough air (that I know of).
Thinking outside the box for an answer?
No equipment can be put on the inside of the building.