ok my suspension knowledge is somewhat limited thus the below,

current setup on my gc8 is king spring super lows with koni adjustables. Its nice and low and handles awesome however its just too impracticle for me at that height, i scrape over speed bumps no matter how slow i go and also need the ability to tow a trailer every now and then. I would like to take it back to standard height,even higher maybe. I have the standard springs in the shed.

Now of course i want my cake and eat it too. Thus i would like standard ride height or higher but retain the handling. I know this isnt gona happen but would like to retain as much of the handling as possible.

Can i just fit the standard springs back in? Or will the koni's not have enough travel to accomodate them? So new shocks are needed. Also i assume the super lows are a stiffer spring than the standard ones so would lose some of the handling.
What are the options for giving it an extra inch or 2 lift and how bad would this affect the handling? Maybe just 17's rather than the current 16's, speedo will be affected i know.

I also have whiteline RSB and ALK fitted.