Open in browser keyboard shortcut simplified

I have 1-n number of browsers setup ready to open current html. I understand that option f2 opens a context menu to select the browser by down/up arrow. In order to do f2 on my MacBook I have to hold "fn" key so it takes 2 hands.

It is a lot of work and much easier to just reach for the mouse.UNLESS I can bind different keys for this job, how do you think about:
Option+1 for the first listed browser
Option+2 for the second listed browser
Option+n for the nth listed browser.

How can I implement a simple as such objective?

Thaank you