It's your choice, of course, but do be aware that exercising to the point that you intent to will probably wear out the plastic spacer in your knee more quickly than usual. That could mean that you have to have surgery to replace it.
Usually, the spacer becomes gradually thinner and you could feel your knee becoming looser. Go back to your surgeon if that happens. At that point, it will probably be possible to just replace the spacer.
My first knee replacement was a partial, which gave me eleven good years. I had no indication that the spacer was wearing thin, because my knee didn't feel looser.
However, the spacer broke suddenly one day, without any previous warning. That was extremely painful and immediately crippling. The broken bits of spacer flew out of the joint and damaged some of the surrounding tissues. I still have one piece of spacer lodged in the back of my knee. It was buried too deep for removal to be safe.
When my spacer broke, I was on holiday, in Canada. I had to travel all the way home to New Zealand, on crutches and in a wheelchair.
By the time I had my revision surgery, the two metal components of my PKR had rubbed on each other and caused some damage. I had to have the entire replacement revised, to a TKR.
I don't usually tell my horror story - I'm over it now - but I wanted you to be aware of the worst that might happen.
Enjoy your active life, but please look after yourself and your knee.