I really can't answer most of your questions but I wouldn't let the lack of an Accutrigger stop me from considering that gun. I bought my son a lefty Mark II a with the accutrigger - it works ok but especially for his smaller hands, he sometimes doesn't pull it straight back, then there is a click but no firing. Have to recock to fire. I do it on that gun too now and then. I find it a bit annoying and overall don't feel the accutrigger adds much to that gun for our uses. Overall its a nice little 22lr. If the basics of the rest of the gun look good to you, it might be worth grabbing.
You might want to email Savage and see what answers they can give you for the rest of your questions.