I have a large amount of jumbled moss that used to be flame, taiwan, weeping, xmas, etc, we could trade for at least one of each of your low/med light plants. to be honest, weeping moss does not really grow much differently than others (trust me, I have tons of moss growing experience) - it's all in the tank conditions as to how it will come out. don't worry, I would only send the best green stuff off the top, and without the ramshorn snails. this past year there was some slime mold and GDA in this tank, but the oto's and snails cleaned it up long ago. I usually trade my moss by the dry ounce (when you weigh the moss after squeezing most of the water out), which is about what other hobbyists consider a softball size portion water logged. so email if interested, and we'll work something out.
how the moss looks currently in my 30gal tank under 6500k light. Vesicularia+Taxiphyllum
this is what the moss looked like before it got jumbled (excluding Fissidens I sold long ago)
