I have a judicial temperament. That means I try not to take sides in a dispute. Instead, I try to objectively consider the facts and law and draw a reasonable conclusion.
In your case, you have had a substantial injury. You are entitled to benefits for the amount of permanent injury that you have received, once you are determined to be permanent and stationary (or, if you accept a settlement before that assessment is made). I don't have the physician's actual or reasonably likely final report, so I don't know what you're likely to get if you stay with the workers' comp claim.
What I know, is that the job you are being considered for is "at will" employment, which means that you can be fired at any time.
You may enjoy working (most people actually do -- they just hate their boss -- except when they are their own boss, in which case, they just hate themselves
). I grant you that feeling good about yourself and having a job, frequently is the best sort of recovery path. But, in my opinion, the manner in which you have characterized your situation, suggests to me that you are jumping the gun, and you could end up with a job that you cannot perform, and nothing from workers' comp.
Unfortunately, I don't have sufficient facts with which to draw a reasonable conclusion here. All I know is that you're injured, and you have the alternative of a workers comp claim and a new job. Based on that limited information, if it were me, I would want to deal with the "bird in the hand" before I started to pursue the one "in the bush."
I feel that you would prefer that I give you the opposite answer -- but, I cannot. I don't have sufficient facts to draw a conclusion that would affirmatively suggest that you give up existing rights for a speculative future.
Hope this helps.