Need Help at the QB position

I drafted Andy Dalton late in a 14-team PPR league.
I unfortunately did not plan better and got beat to the waiver wire multiple times for potentially good options for the rest of the year (Watson, Palmer, etc…). Through bye weeks and injuries, other replacements have vacated the waiver wire (Goff, Brissett, even McCown).
I currently have Case Keenum on my roster, because of Dalton’s bye week last week.
I don’t know what to do. Do I pick Dalton back up? Do I start Keenum?
My other options on the waiver wire are Bortles, Kizer, Flacco, Hundley, and Beathard.
Or as my last option do I go out and trade for a Tyrod Taylor, Matt Ryan, who I probably won’t have to give up an arm and a leg for (hopefully not)
Any and all help is appreciated. Thanks!

If you can get Ryan without giving up an arm and leg, do that. Otherwise Dalton over Kennum.