Silver, you might have a great deal there and will have fun, however, my concern for you is a) that you will not fancy the recoil of those larger guns (which will not contribute to good shooting) and b) that the inherent inaccuracy and/or expense of those larger calibers will leave you disappointed in the safe shooting sports.
I am not trying to discourage you by any means -- far from it. But consider a decent .22, some above-average rimfire ammo, and some competition style practice for a 2nd gun.
I am not trying to discourage you by any means -- far from it. But consider a decent .22, some above-average rimfire ammo, and some competition style practice for a 2nd gun.