XRAY - Model racing cars

Having built my T4 it comes in at 1300g so I need to add 50g of weight to make it legal (and my battery isn't particularly light weight at 300g). The car is already well balanced without adding weight so I'm purely adding weight to bring it up to spec.

I want to find an option that looks elegant on the car as I feel that 50g of tyre balance weights will look ugly. Do the center balance weights still fit the T4 (XR309853, XR309854)? What about the precison balance weights, XR309840, as there are no predrilled holes to mount them on. Are the alu lipo holders (XR306186) an option?

What have other people done?

If your car is side-to-side balanced already and also every thing else is like you wish then always add the weight as centered and as low as possiple. That's the best place.