We planted our ten little Irish moss plants down the center gap. They should each grow to be about 12" across so we will definitely need to purchase more plants to fill everything in, but our plan is to let these little guys get established first. This will not only serve as a test run to make sure the moss will thrive in the light and soil conditions present here, but also let us get an idea of how many more plants we will need.
We mulched along the sides to help cut down on mud until we have moss there, as well. We also spread grass seed at the end of the paver rows so we will eventually have a nice lush lawn to meet up with the moss.
So this project was definitely a lot of work, but the end result is so worth it. Especially once everything fills in! And we managed to do everything for under $150. You can't beat that. Let me know what you think in the comments!