Style chooser

hi every master,
i am want to DIY cold air intake...
the purple line inside the picture which is my planning connection...
the circle part is i want to drill it...

the hole which i make it from drilling ... is still inside the front grill ... so the water would not easy flow inside to my hosepipe...

er... i just want to ask is there any disadvantage for my planning ???
i am thinking quite long time ago .... but...