I think you will be fine with that. I own a G7X mark ii, which is pretty similar, and it is a great travel camera when I want to go really, really compact & lightweight. The lens is bright on both, but not only acceptably sharp, even for a compact.
However, note that you can mitigate a lot of lens softness with diffuse & sharpen. I did some calibration for the Canon G7X ii here, if you are interested. Doing this for all apertures I use above f4 resulted in a noticeable improvement without artifacts.
Trying it out is a good idea though. The AF is satisfactory on recent Canons, especially for travel photos. I share your preference for a viewfinder, even when I can see the screen well I find that I compose better with an EVF.