I'm planning a gamecube nuc modding using a NUC and a small 750 ti.

Due to size limitations I need to know if i can mod a m.2 to PCIe x4 adapter to solder it to a PCIe x4 to x16 riser and make it smaller.

¿What do you think?
¿Can it be done?
¿Will this wiring reduce performance?