Your pool of models looks pretty solid, other than a lack of librarian who is almost a little too good with the Viks .
For 30 SS I would go:
Viks
Taelor
Ronin
Gunslinger
1 of : Misaki or Librarian
5 SS
Depending on Weather you take Misaki or the Librarian your crews play style changes. With Misaki you're trying to spread you opponents fire by presenting so many threats that they can't deal with them all effectively. any of the Viks Taelor and Misaki will all beat any shooty/casty crews faces in if they make it to melee range and the gunslinger will annoy them with suppressing fire, and has the potential just blast away a minion a turn with rapid fire/trigger happy so they can't ignore him either. heck even the Ronin is no slouch with its ability to push through enemy lines and attack weaker models hiding in the back. Depending on terrain and deployment, you'll probably lose stuff going in, maybe even one of the Viks but once you get there, the results will be... gratifying.
If the Librarian is included you'll end up focusing much more on the Viks. Since you're down to 4 Attacking models for your initial push (Sword Vik, Taelor, Ronin and Gunslinger. Gun Vik is probably sticking close to the librarian to act as a healing target for her sister) the enemy fire is going to be much more concentrated, and probably Taelor or the Gunsliger will go down before you make it to Melee range. However baring horrid cards and black Jokers Sword Vik will make it in and at that point she can either call her sister forward and begin the fun , or go it alone with continuous healing flips from the librarian in the back. Keep in mind without Von Schill nearby the Librarian will go down to a stiff breeze. If the enemy ever gets a couple of shots or spells off her she will die, period. If she goes down hopefully it's late in the game and you're already to grips with the opposing crew, otherwise you may be SOL.
With either List I tend to have Taelor on point as it were. She's scary enough to draw fire, and tough enough to take it for a couple of turns at least, possibly more if the librarian wants to get close enough to give her healing flips.
Some Questions For You:
How do your games usually play out? How much Terrain does your group play with? What is your overall plan for advancing, are the Viks out in front, or is someone else leading? Is the enemy giving you the opportunity to use whirlwind by sticking close together, or are they spreading out?