Hey there and congratulations on getting a few first episodes out! Launching is half the battle, and it looks like you're well on your way.
I'm actually running a small podcast as well and I feel your pain about figuring out the target audience and the personal style. Unless you're aiming for mainstream success, I'd suggest focusing on what you personally feel is missing in the podcasting sphere. Hopefully it will keep you driven, and ensure that you genuinely enjoy the process. Plus, it increases the odds that you won't abandon the project midway. Keep on the good work!