Something similar happened to me over the summer...I was tight on time and only had a few days when I broke a rear spring...so i ended up buying the H&Rs from tirerack. I only put the rears on as those saved a lot of time..
I didnt notice any difference what so ever after running this setup for about 5 months. the front end felt no different then before. Im also from the snowy northeast and get pounded quite frequently. The lower rear didnt affect anything at all..
Overall i didnt notice that the rear was lower...i only began to notice when i finally got around to putting the front springs on...good luck op