These were installed for looks and not any function, right?
Leaving the fender untrimmed doesn't give you any more clearance for flexing.
I believe the whole idea about fender flares is to give you more room to flex, thats why you trim, and keep the mud from flying out all over the side.
I would have picked another style of flares. Those look like garden border/edging. Sorry. That's just my opinion.
If your happy thats all that matters.
2004 GC Spec. Edit. V8 4x4 Quadra-Trac II. Bright Silver Metallic Clear Coat, 4" lift, RE shocks, adj. JKS CAs all around, 265/75/16, ProtoFab winch bumper, Vortex 10,000 lb. winch, dual OME steering stabilizer, Rockyroad rockrails, skids, JKS Discos. Addco front & rear sway bar, & Aussie locker.