I know of many riders that are riding two wheels as a single leg AKA. I would suggest you check out a Facebook page that has just started called “
We Ride Challenged.” There are several riders who are AKA that are still on two wheels and this will be a great resource. Once you get comfortable with a more “permanent” fit for the prosthetic, my guess would be that you could handle it (it’s a gotta "want it bad" sort of thing, thus up to you.). I do think that the length of the stump my play a part in this as in if you are just above the knee that will be a factor as compared to trying to control a prosthetic as a hip disarticulation, like I am on my right side. The higher you are, the more of the challenge on two wheels, in my humble opinion. Gets harder to control the knee.
The Pingel or Klictronic would help with shifting and stopping would be a matter of relying on your right, thus “cheating” a bit to the right side till you could plan the left. Practice would be the name of the game. Getting on and off would be easy, in my humble opinion. Couple choices as I see it. As you approach the bike while holding on to the right handle bar, you could raise your left leg up and over the seat and then “hop” over closet till the left leg goes down the side of the bike (hard to say it, but I am sure we could get someone to “demo it” for you.
Or, taking a look at a double leg amp friend of mine, you could sit on the seat, “break the knee” and flip the leg up, slid into the correct seated position, and then twist the leg back into place. You can see what I mean by looking at his picture.
Accessories are not that big a deal as far as floor board modifications and the like. You could even look into having the shift lever brought over to the right side and use that foot, like a single left AKA friend of mine does. I have pictures, and would be happy to share if need be.
As for a Trike, well, that is cake. NO problem and again, would suggest a look at the picture I included as “dropping the bike” all goes away.
First, in my opinion, you need to be sure that you are medically cleared to take this one. Then you need to decide Two or Three Wheels. Once you do that, “we” can join in to help you in any way we can.
Let me know if I can be of further assistance.