Regarding automating the moisteners, you can use 3 Routers from Factorization to automate any number of connected moisteners, so you could go from 1 to 100 moisteners and still only use 3 routers. What you do is pipe the items directly into the routers. For the wheat router have it insert wheat into slot 0 of only moisteners, for cobble/seeds have another router insert it into the top of only moisteners. For the third router set it to extract only moss stone/mycelium and mulch from any slot, of course only moisteners as well. These require some of the upgrades, such as the machine filter, item filter, ejector, and speed boost (probably some others as well, depends on the machines and what all you want), but once you have the system set up you can easily expand it without much difficulty. To add to this, it works extremely well with RP2 tubes. You can use the tubes to insert wheat and cobble into the two insertion routers and have the ejector deposit the mulch and moss stone/mycelium into a relay which will then dump the items into the RP2 tube network.