It's low water Ark boating, you'll have a few rock strokes, but you should be able to float the entire stretch just fine. The boat chute at the diversion dam will be a couple of big drops but it's all entirely runnable. And 700 cfs is still better than 600 which it still better than 400 or 250. It'll be good practice on the oars for you and there'll be cold beer and hot pizza at the takeout.
If you want better water for a Class II float, hit Grizzley Creek or the Upper C.
Fishermen run most of our favorite rivers at half the flow we consider minimum and still manage to get to the takeouts...
Have a good trip!
Nothing in the world is more yielding and gentle than water. Yet it has no equal for conquering the resistant and tough. The flexible can overcome the unbending; the soft can overcome the hard. - Lao Tse