Where do you source your screens though? I'm willing to DIY a mod, but finding a backlit screen without gutting a perfectly good AGS-101 has been impossible for me so far.
The front light I ordered for a GBC mod I tried earlier was complete trash, completely opaque so you couldn't see the screen, so I'm super wary of random Chinese online stores for GB parts after that.
Where have you tried to order from so far? I've had good 101 screens from eBay. I'm opposed to gutting an AGS-101 to be honest. Half the battle is installing it properly without dust under the screen, and then adjusting the pots to get the optimum refresh rate and contrast. From what I hear, RCG doesn't bother to tweak this as finely as is possible.
Front lights for GBC are usually gutted from GBA SP 001 models, and rotated sideways. If it's installed back to front, the screen will appear opaque.