Here is the latest update. Last night around midnight I decided to do a few water tests. Test them again this morning and this evening and came up with the same results.
Ammonia - 0
Nitrite - 0
Nitrate - 20
Would it be safe to do my large water change and introduce a few snails and maybe a hermit or two?
Sounds like it to me.. Just make sure to slowly add whatever your going to add so you don't over tax your bio-load. (I made that mistake once).. As far as your cleanup crew goes I would add waste food eaters and possibly diatoms type critters for now. Hopefully you don't have any algae issues.. but you can add those types as those issues develop (hopefully not)..
You can probably even start adding a fish or two..