Peter,
I really feel sorry for you, I can imagine what it must feel like.
I'm pretty sure your periphery would be washed out as these would be powerful lights and its bound to scatter a lot especially given the proximity.
you can make out the difference by turning on a light in your backyard behind you while looking at the sky in the opposite direction. does affect imaging a fair bit.
But worth a try imaging in the opposite direction. just a 1 min exposure would do.
you might want to think of light pollution filters, visual or AP, there are lots of threads and posts here, I've tried an Astronomik UHC filter from my backyard in melbourne, and it does improve the contrast.
would depend on which lamps these are and the filters pass band.
good luck
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