Figment,
That hole does look pretty close to the fuel lines opening if you plan on using a blind nut there. You'll have to make sure that the tooth of the blind nut has something to bite into.
Today I tacked my 4*60 fuse /w CA and then went over all the seams with titebond, except for the firewall. I used 30 min epoxy for that. I then painted both sides of the firewall and the insides of the nose cheeks with a thin coat of epoxy also. That should take care of the fuel proofing in that area.

mjcell,
Medium CA will do just fine and be a lot quicker also. I'm using titebond because I had a serious respitory reaction to excessive CA fumes a couple of weeks ago and I'm ot taking any chances of a repeat performance. I'll use CA to tack but I've got a strong cross ventillation going when I do.

RFan