I am not aware of that brand of coil overs, I know coil over prices in your area are very much different than here.

The thing that bothers me is that you had to drill a new hole, that makes me wonder if you got the right coilover? If you had to move the hole, that mean the sway bar kit would need redrilled as well. The swaybar will improve handling/rigidity/leveling in the front, but those things won't add comfort.

The back definitely sounds like you are bottomed out, instead of moving the suspension, your moving the car.

Which part # or a link to the coilovers you used? I would like to read and compare specs. The cobblestone road issue, well we have brick roads all through pittsburgh, it's definitely not comfortable to drive on all the time. I can do it though.