Just buy it!!! 
I think so. I believe that buying bitcoins with your salary is one of the smartest thing you can do. Not only can you save up your money somewhere, you can also treat it as an investment.
Just buy and hold, and sell when the price goes up.
Yeah and if you don't have time to work on it and earn it then you can simply buy it, as it can be the best saving and investment for the future where you can earn good profits by selling when price goes higher.