Ehh considering that Sai is long-range, I'm not sure if Shikamaru will be able to catch him that well, he'd have to go for Neji. Both Ten-ten and Shikamaru can thin out the ink crowd though. Maybe if Shikamaru pulled off something smart... he can capture them both, but I don't find it likely. Or to put it in better terms, I don't think it would work.
The way I see it, Neji and Sai will be having the advantage at first and corner them, and Shikamaru will pull of his plan. He'll probably do something like have Tenten throw the shadow infused chakra blade or have his shadow connect with the weapons that Ten-Ten throws, so that it contacts with any shadow the weapons hit. I believe in Sai and Neji's intelligence all the same though, mostly because Sai has already shown to use Ink Clones in the past (and he knows that he probably should in this situation).