If you buy decent quality coilovers they won't be rough and bone jarring.

I rode in an eg with ksport coils and it was stiff but not very comfortable with soaking up bumps. I bought my JIC coils new with 12kg front 6kg rear spring rates, daily drove it, from gold coast to Brisbane 2-3 times a week at one point, even though they have stiff spring rates, I turned my dampness right down and they were mint, stuff but not a bone jarring ride.

IMO buy a set of tein super streets, very comfortable coilovers, rode in mates 33 with them. They are firm, nowhere near as stiff as my jics, but for the ease of height adjustability and a nice ride that will take corners, Id definitely reccommend them.