While the set-up for pool mining is easier, it is a common misconception that you need thousands of GRC or a mag over 20 to solo mine.
The true requirement to be paid out for all your work is to stake at least once every 6 months. You can do that with a combination of balance through POS, or research through POR.
RE: The Total and Utter Noobie Guide to Successfully Solo Mining the Cryptocurrency Gridcoin