You sound like you've got your most important assets covered...Your attitude and your willingness.
Who knows, The knee may hurt less as time goes on. There's no sense in trying to deceive anybody with hiding a limp. You won't ever feel good about lying, and of course someone will notice anyway.

Nearly 20 yrs ago, I broke my ankle into 6 pieces & imped for years (It still takes a dump on me once in a while.)
If I had let it stop me, and not continued with the trade, I would have gotten much more pain out of missing what I love to do than I've ever gotten from the injury.

Take every precaution you can to work safely, and use all the proper safety gear.
It's not "cool" or "manly" to beat the heck out of yourself like some of us dummies thought in the old days.
Now you've got Repetetive Stress Syndrome We used to have My &*%#* Wrist Hurts Again
Good Luck [Linked Image]