If you do this, while you'd be mining, the possibilities of actually mining a block are basically zero.
This, and everything will work slowly on your PC and you will be paying for that in electricity bills.
Mining is for professionals only now, with huge money to invest and clever minds to survive in this competetive market.
you can easily mine with laptop to get some starter amounts. vps is your friend as well
You're talking about mining other cpins and not Bitcoin, right? If you are talking about mining Bitcoin by following your suggestion then it would not be profitable at all. Mining Bitcoin has a set of requirements to make it "profitable."
I started with btc on macbook pro 2012 (started this year). then swapped to altcoins. I guess btc mining wasn't profitable at the moment, but swapped altcoins were huge. depends on the set of your skills, I am pretty sure you can start with even less.