Many people are using Ku-band only offset antennas for Galaxy 10R,
which has a relatively strong signal and better elevation angles in Alaska.
90 cm may be on the small side; I would suggest probably a 1.2 meter.
And you'll definitely want to put in a motorized C-band system. McGrath
has a small cable system, but I would suggest a knockdown mesh antenna
such as the CKD-10, which can be sent in via UPS or other air carrier and not
break the bank. Some of the boxes can go via the Post Office, and be treated
as PRIORITY MAIL...a real price break compared to Air Freight. Add your FTA
receiver to the motorized C-band, and there will be a greater variety of things
to look at.