Hi Nan
I personally don't like spag except for protecting roots when I'm mounting a 'chid. I'd remove it...but then again, I'd be potting it too
I know it's not what you're "supposed" to do but I want to see what's going on underneath so I can fix any problems that may be lurking right away.
I do A LOT of misting...I avoid misting the blooms and I try not to get any water in the crown of the plants. If some gets into the crown, I dry it out.
I have Aliceara Butter Buds 'Pacific Nova' and have moved it around a number of times, trying to find it's happy place. I think I've found it and it now sits in a high light area.
I don't know anything about the qualities of well water so I can't give you any advice there. I use rainwater...and when the barrel is empty, I go back to using RO water.
Good luck, please keep us updated on your progress