Sounds like you have your Muk from the request - somewhat. LOL
I don't have Muk in any of the Safaris I currently have access to, so I can't get the hidden ability. If you don't find the HA and want some breeding stock for when you do (hey, an Everstone can pass an Adamant nature 100% of the time, Shadow Sneak passes down within the same species, and 5IV tends to breed well), I can work on one. I had to import my Grimer from Unova due to the missing Safari. Did the same with Seel (Dewgong) right next to it, in fact. LOL
I might look for a Hidden Grotto Muk from W2 if I don't have the DW one in Black, but again, I'll leave this for if you don't get an HA for a while.
I did - more or less. 3:
The Muk has some IVs but isn't adamant.
The Nidoran is timid though and also has some IVs. I was going to go for more but I'm afraid that I can't; Just recently started working and it's taking so much out of my time I hardly get to play Pokémon at all anymore. : (
I'll add your FC - feel free to send me a trade request if you see me online.. I sometimes leave my DS turned on while I'm at home so i might just see it. If not we can work out a time.
What time zone are you in anyway?