How weight bias effects sway bar sizing?

[Rusty G]

The weight bias on my car varies between 51/52 front and 49/48 rear.

The change is from full to empty tank. That's also with driver (it's rarely driver without one ) .

Most generic sway bar packages are within a 1/2 inch diameter of each other front to back.

Mine fall in that general area , being 36mm front/27mm rear.

My question is , since the car is very close to 50/50 , should my bars be similar in diameter?

Or should I try and get bars that mimics the exact weight bias (36mm front/34mm rear)?

I also have a 1 1/8 front bar (approx 28.5 mm), would the smaller front be a better match?

Last, the front bar is hollow, how does thgat effect it's "stiffness" compared to the solid rear bar?

Thanks in advance.