I would not start out with a .454 at your age! This is not being macho or anything, just being reasonable and picking a handgun that will do what you need and be fun to shoot. I see you are PA. Anything you will be hunting there will be more than handled with a .44 mag. If you want to go bigger, you might also consider the .480. It is still pretty manageable compared to the .454. Either one, or even the .41 mag is more than powerful enough for PA deer. The last thing you want to do is start out with too heavy a gun before you are a seasoned handgunner with hard kicking pistols. If you develop a flinch in your shooting, it will take a lot of hard work to correct it.
I recently had a younger fellow used to shooting 9mm and 45 auto ask to shoot my SBH .44. He was a friend of a coworker, so I was willing to let him try it. He had already bought a box of factory ammo, planning to shoot a bunch of it in my gun, and then go buy one of his own if he liked it. He fired it twice with his factory ammo and smacked his knuckle pretty hard with the trigger guard. I tried to counsel him on how to hold a single action grip so that would not happen, but he didn't want to shoot it again. Said he had changed his mind, and even gave me the rest of his box of ammo!
And, not to sound alarmist or anything, but a 12 year old kid was killed earlier this year by a .454 Casull. No, not by the bullet. He was killed when the gun recoiled, striking him in the forehead, resulting in brain damage and death.
I'm just saying start out with something manageable and work your way up. I started pistol shooting with a .22 and a .38/.357 when I was a teenager. I thought my model 27 S&W with .357s kicked pretty hard back then. Now, that's a pussycat, and I shoot lots of hot handloaded .44s and .480s in my SBH and a scoped SRH. I love pistol shooting and switched to all handgun hunting for deer last year. This year I took a 205# 12 point buck with the .480. I love handgunning and handgun hunting, and hope you will too. Just don't get to anxious to get into the big guys, and end up spoiling it for yourself.
regards,