Keith, I didn't know what I wanted for the rest of the car before I started looking at Wide Fives. I literally bought my wheels and then made the rest of the car match them for an overall aesthetic.
I drafted the whole redesign after buying the wheels. Odd, huh?
I did find that I could get bolt-on 914 Wide-5 brake rotors and such for the entire car for not a lot of money. As it happened, a full set fell in my lap for $500 from a guy who didn't want to use them on his own ride, and I'm still using the front set. The rears offered a complication with braking but had a hand-brake benefit of each brake being independently cabled. That was nice, but not worth not being able to stop.
I have since reverted the rear brakes to Wide-5 drums. One is allegedly off of a 356, and the other is said to be from an early Beetle. Both are secondhand, and I couldn't tell you which is which. Both work fine, and the 'Dub brake was probably a lot cheaper when purchased; I don't know for sure, since I traded fabrication work for the set.
Wide-5 is doable. It looks good. There are several more wheel options for the four-lug pattern, but it's a four-lug pattern. If you haven't firmly decided to go that route, come to a show where you can see the mechanicals under the straight-bodied, Wide-5 cars, and see if that's something you're okay with doing and riding around on.
Like so many other things here, there so many decisions to make that you'll ultimately just have to set a course toward the overall package and slowly work your way toward that goal. The trick is to make decisions that don't involve re-engineering your whole car just to get the appearance you want.