I don't really think solo mining is possible with LYRA2z, unless you are going to mine a new (relatively unknown) coin with low network hash-rate. And if you happen to find such a coin, your strategy will work only until someone with a lot of hash rate has discovered it and joined the race. At that point the only meaningful thing to do would be joining a pool. The attempt to solo-mine a well established (not necessarily just LYRA2z) coin is totally impractical, even if we suppose that this algo hasn't been ASIC-ed by now.