Welcome to Librarium Online!
Ok, I have posted some threads previously and I have learnt allot form different players. This is what I have come out with as perhaps my final list:
spirit stones, fortune, doom
6 Howling Banshees
Exarch with War shout, executioner
10 Dire Avengers
Exarch with bladestorm, dual catapults
both with bright lance
wraithsword + 2 flamers (free)
Still have 10 points to spare. On a final note I have 1 question that I really need to ask, I have been told by someone at my local shop that if say for example my 10 dire avengers get in their wave serpent, my farseer can get in there with them? Is this true? or is it only 1 squad at a time? If he can't I may try and drop somethings to try and free 20pts for a jet bike for the farseer, so he can keep up with the dire avengers? anyway thanks!
Want to start Tyranids? http://www.librarium-online.com/foru...ml#post1799921 AND http://www.librarium-online.com/foru...t-builder.html
Up to 12 models can embark a Wave Serpent. You would be attaching the Farseer (IC) to the unit. So there would be 11 models. You could even attach another IC to the unit if you need/wanted to. ICs can start a game attached to a unit as well. You can even start the whole 11 man unit in a Wave Serpent. Check out the Independent Character section in the BRB.
If you're dead set on those vipers then go for it but if you have war-walkers I think 2 with 2 EML's each is 140pts. I never use vipers but its a personal preference. I think even giving Brighlances to the Wraithlords would be better since they're a much more resilient platform and have BS4.
Another thing that I saw is a TL Starcannon on the Serpent. Why? AP6 is nice and all but that gun will rarely do anything game-altering. An EML saves you points and is much more likely to pop a transport. You could use the points towards the spirit stones that vehicle desperately needs.
In general I think the Vipers are a huge points sink which is dragging this list down. Shooty Wraithlords, EML's and S Stones on the Serpents, and maybe a small squad of Jetbikes will go a long way.
With the Banshees, I think they will be more effectively run maxed out. Maybe drop the vypers for the points.
I second everything powerclaw says by the way .
Fear is of the unknown...
I'd say take the Starcannons off the wave serpent, and put in a pair of bright lances. Take the BLs off of the Vypers, and put either EMLs, or Shruiken Cannons on them. BS 3 is a terrible platform for Bright Lances.
If you want to switch things up a bit, I'd say drop the vypers, take another wraith lord, and give both Wraithlords an EML and Bright Lance each. This is one of our better Tank-Hunting units, that way you can swap the aforementioned BLs or Starcannons off of the wave serpents and give them something a bit less pricey, EML, maybe?
I'd just like to add: I always put EMLs on my wave serpents with a shruiken cannon upgrade on the bottom. If I'm firing at infantry with it, plasma mode + 3 S6 shots work out fine. If I'm going up against tanks, the S6 shots won't matter much compared to the S8 shot the EML gives us.