I'd suggest you look at what that last photo is telling you. You've got a great thick bunch of wires running right along the middle of the F-hole and they'll be very visible. You probably won't want that! You'll need some way of pulling the wires to one side. Maybe by re-doing the tie-wraps around the pickup area and the volume pots you can get it to sit clear of the F-hole.

Also, whilst you might be able to do it, it's going to be a lot easier to pass the bridge grounding wire into the guitar from the top and down through the hole into the body, rather than try and poke it up via the F-hole access. Or at least pass a thin wire down, solder it to the end of your existing ground wire so that you can then pull it up through the hole. Although it means some in-situ soldering with the pots outside the body, passing the bridge post grounding wire down from the top is a lot easier!