will I see better 5k results at 55 miles a week versus 30 miles per week?

Question

last year versus this year.

Answer 1

Somehow your question was posted in the HUNTING section. You will get more and better answers if you move it to the correct section.

Answer 2

Not likely. You'll be better off keeping to your 30 miles, but doing them faster, adding in hill sprints for strength and intervals to get a feel for speed.