Actually your mossy and 30-30 would serve you well. Pick up a good 22 and you would be in good shape.
If you just need a "patriot rifle" get something that you can buy enough ammo to stockpile without going broke.
I like my Saiga AK chambered in .223/5.56, or my Mini-30, or my SKS.... I will have an AR soon.
If I had it to do over I would buy the AR first.