front springs question

Hey there, got a 92 cutlass supreme convertable. Since I will be doing a brake upgrade(10.5" rotor to 11") and have the strut knuckle out. I will be replaceing the old springs.
I found I have the FUY(GM part# 14100176) springs in the front.

Now my question is should I move up a bit in load rating with regards to the front springs? Or should I leave them where they are.

The suspension is a FE3 with a RDN(GM part#17984230) rear mono leaf.

I was thinkin jumping the front up to a FWW(GM part# 14100178) spring (That puts me bout middle of the pack for springs)or should i go with the top of it's class load rated spring KPB(GM part#22076783)?

I don't want the height to change, or go for some crazy aftermarket spring. This is just a daily driver, that would like to handle the corners a bit better.

T.I.A.