interior led question

[2.5s mila]

ok. so, i'm just about ready to order my led strips and what not to install my footwell, cupholder, and center vent lights. i have a few questions. how in the world can i install lights into the cupholders on the doors? i have a sedan, and it doesnt look like the coupe's. also, how can i install them in the back cupholders? like the one that comes down in the middle of the back seats?i was thinking about getting the 9" strips for the footwells. but is that gonna be bright enough? and which leds should i get for the cupholders?thanks in advance.-kosty