27″ Zillas on 420Rancher performance?

Looking at finally doing my first tire/wheel upgrade on my 2014 SRA Rancher. Leaning towards 27-9-12, 27-11-12 Zillas on ITP 316 wheels. Not wanting to go too big where I will need a GR.

Quad is mainly used for hunting, food plot work, and a little trail….zero on road.

Whats your opinion/experience? Will this be too much tire for a stock quad?