With shocks.. you pay for what get. In the past years the single, and especially double adjustable are available... yes, more $$.. but worth it.
Otherwise, buy a name brand... such as Bilstein, etc and you won't go wrong.
Your 60-series tires will give you a softer ride vs 50 or 40 or less profile... as the taller sidewall will absorb more impact. I use 60 series for local cruising along with 1.24" torsion bars (and red Koni shocks... being replaced by QA1 double adjustable).... the for track time (AX, HSAX, HPDE) I use 50 series tires or less... pending the event.