Here's a pic of my front end with rectangular headlights. They're stanley and the front is real RE-Amemiya.
I do a lot of hwy driving and the lighting is good enough for pitch-black roads between cities. Better than foglights I'm sure, but could be better. They're there cause they came with it.
I have two other cars with HID and there's a big difference. I do want to change it eventually to projector HID's but I'm in no rush since I only drive the car in spring summer and the sun's out till 10pm any way.
When I do switch, I was planning to have dual lights like you do, but definitely opposite: inside lights further out and outside lights further in (when looking at the car) probably following the same curve as the front of the bumper to make it look balanced.
I was going to get used projector housings from here:
http://store.theretrofitsource.com/index.php
Avg price is 200 for projectors, pretty good IMO. Then buy a ballast/bulb kit.
Hope this helps.