Is P. Rivers a viable QB to ride through fantasy playoffs?

I’m currently 6-1 in a 14 team .5 ppr league.
RBs - Hunt, Ingram, L. Murray, J. Charles, McFadden
WR- Brown, D. Thomas, Hogan, Shepard,
TE - Kelce

Somewhat concerned about committing to Rivers to push for a championship. Do I need an upgrade? And If so, who should I target without giving up to much?

In a 14 team I’d say it would be hard to do better with the position your in now. I’d be confident

Thanks for the imput! Yeah it seem like I’d have to give up a lot to make a significant jump in the position. My league really likes to hoard QBs.