hye , i am living at Malaysia and my tank now dominated with Malaysia , in specific sabah wild sps. i believe yours also coming from the same location , which is sabah.
for wild acro, from my experience sabah suharsonoi is the most difficult. while echinata , speciosa , lokani , not really.
when i mean not really, that doesnt mean they're easy. they still challenging, but not as hard as sabah suharsonoi.
here we always keep the qt or display tank kh somewhere below 8 , like 7.8 to 7.5. certain lfs definitely go lower like 7 , to match with their habitat.
wild tenuis , wild mille not a problem much from my short experience. they capable to handle dip really well, despite i just got em from the transhipper. open the box , temperature acclimate , dip. tomorrow they will open the polyp just fine.
for deepwater species , i suggest u better let them stabilize and adapt with the new water environment first. i tried to dip them on early , just after received the parcel and it tooks me like 2-3 weeks to see them show the polyps.
more like, luck on my side because they not straight throw the tantrum and go RTN. so it's much better to have separate qt tank for them, and dip after u see them stable.