You can do this and have a full time job, you just have to remember if a stock is so cheap and there is no news, there is a lot of risk. I hardly trade penny stocks anymore, I do better in vegas. I still trade stocks, and I have been doing really good sinec I try and find good companies that actually make money. I made good money in oil and energy lately, and I like tech towards the end of the year.
The worst thing to happen to me is making money on CMKX, I gave half of it back by buying when it dropped and now it is worthless. Live and learn.
I wish you the best of luck.