Yep, if you had to choose, take archers. In TFT they have higher HPs and can survive quite a few shockwave/carrion/impale/chain lightning, especially when you've got healscrolls.
Dryads, while being immune against anything bad, also sucks against about 70% of the time, 4 ranged units FFing and you can kiss them bye-bye. You'll only need them for abolish.