Bobcat 300 question

I have two options on how to connect my bobcat.

Option one: Place the miner on the first floor and run 100ft of 400 RFC to the antenna.

Option two: Place the miner on the second floor which is 110 degrees in the summer and 20 degrees in the winter. Run 30 ft of RFC to the antenna and 70 ft of CAT 8 down the walk to the router.

I’d like to know which one you think would work best. Thank you all in advance.