Alakazam solo
Will this team be able to do PC/FS at least?
IVs are A/D/S, and SB for Gengars are Shadow Ball.
1: Gengar CP 2350 L34.5 12/11/14 SC/SB
2: Gengar CP 1995 L27 15/12/14 H/SB
3: Ttar CP 3179 L31 14/15/14 B/Cr
4: Ttar CP 3188 L32 14/08/15 B/Cr
5: Ttar CP 3109 L30 15/14/11 B/Cr
6: Ttar CP 3117 L30 15/14/12 B/SE
I'm going to max out the first Ttar, and power the Gengar to L30.
Answers
I pretty much agree with gluglumaster, except you don't need to dodge with the Gengars either (you're fine for survivability; you just need DPS), and B/SE on the last T-tar won't hurt you. If you even get to the last T-tar, you'll probably just need a few bites to finish off the 'Zam. This is very similar to the lineup I used the first couple of times I soloed PC/FS, except I had a Scizor in the last slot that didn't end up getting used at all.
The Gengars will die quickly, but that's okay. They will get you ahead of the clock while they last, and the T-tars will finish the job. I highly recommend not dodging with the Gengars.
I don't recall what level you are, but for this matchup, you'd be better off taking two of the T-tars up to L35 than one to, say, L38. I can understand wanting to max a 96% T-tar, though. Even with the T-tars at L30-32, you should be able to do it. Good luck.
If you TM the SE TTar to Cr you can theoretically take on any moveset with that team. Depends on your phone's performance mostly. It's quite similar to the team I used to first take on most movesets.
Don't put Gengar first against Confusion. Against Psycho Cut try to dodge all charge moves with Gengar. Obviously dodge Focus Blast with Tyranitar. There's more to it, but most of it is figuring out dodge timings and trying until you make it.
So there you have it. Since we are talking about PC/FS here, and not confusion or focus blast, the only disagreement seems to be whether you should dodge FS with the Gengars or not. I say no, housunkannatin and the Gamepress guide say yes. Try whichever approach you are comfortable with, and if it doesn't work, try the other, but if you don't dodge, you will only need to try once. Dodging FS is not that easy, and unless your timing is perfect (i.e. if you have to swipe two or three times to be safe), you will squander a lot of DPS in the process. Missing any dodges will really hurt you. Having a shadow ball negated at the last instant because you were too busy spamming damage to dodge an FS will not hurt you.
Given that there is a straightforward, reliable way to do it with the lineup you have (no dodging), I don't see the rationale for getting cute and trying to dodge future sight with the Gengars, but try it both ways, and decide for yourself.