Does anyone know the requirements/ standards for being a Police officer?

Varies from State to State and some Departments put on additional requirements.

I think you need to take one thing at a time. Plans are good but you haven't even gotten to the military yet. Lots of things can happen to change plans.

When I was NCOIC of a USMC Recruiting Sub-Station 84-87 we called guys like you window shoppers. About once a month a few would drop by each branch's office and leave with stacks of literature under each arm. Most never joined so we ignored them. It was either Force Recon, SEALS, Ranger, SF, Pilot, or Army WO pilot. I'll share some advice from someone much wiser than me. Don't worry about the mule going blind, just load the wagon. Meaning - nothing wrong with having long range goals, but you can't possibly plan your next 70 years on this planet in a few months. Things happen and things change. Just decide what YOU want to do and get started. Make course corrections from there. The hardest step in anything is the first.