Hello.
You are going to have a hell of a time facing other UU Stall teams, in particular double ghost teams, as Hitmontop cannot Foresight spin. Roserade has no trouble at all getting 3 layers of Spikes down early, especially seeing as Clefable can do nothing except Trick a Flame Orb on it, and Roserade can just Rest off the damage and switch and have its job done. Having faced an opposing stall team with Taunt Mismagius, I can honestly say that it is a great way to give other stall teams a hard time, being able to Taunt Roserade to prevent Spikes setup is always great, and Taunting Chansey's recovery is a great way to stop opposing stall. Therefore, I suggest Taunt somewhere on Mismagius, I can vouch that it works.
Next off, your team gets absolutely manhandled by Taunt Swords Dance Drapion. It is going to stop your Chansey strategy cold, and it can Taunt Mismagius which has no attack moves and Taunt Tangrowth to prevent it from Sleep Powdering. Clefable also can't do anything to it and i'm almost positive Moltres is falling to a +2 Crunch with Stealth Rock. I face the same problem on the stall team I run, my suggestion to you is to use Scarf'd Rotom over Moltres and run bulky Intimidate Hitmontop over your current set. You can even run Earthquake on Hitmontop since Fable is providing you wish support rather easily.
So, in short I recommend
Taunt Mismagius
252 HP / 216 Def / 40 SDef Impish Intimidate Top > your set
Scarf TBolt / Shadow Ball / WoW / Trick Rotom over Moltres
Good luck!