Ok need roster help this week Qb, Wr, Def

Ok I’m in the playoffs 16 man standard and I have a really good shot of winning it all my team has been on fire. This is the toughest week for me playoff wise right now I got mariota, juilo, dez, doctson, gurley, drake, Morris, Graham, Steelers should I play mccown over mariota and my only other wr choice is funchess unless somebody gets dropped but right now Gabriel is the only decent option on waivers. Also I have the rams def but I could pick up either the jets or Arizona help me out footclan please and thank you