N2audio help. I was thinking of runing one 10" and one 12"?

I would be running a JL audio E1800d amp. should i have both sub be the same rms? or I was think a lower rms for the 12. like running a fosgate p2 12" and a p3 10", or some thing along those line. Or if this is a dumb idea let me know.All answers would be appreciated. Side note N2audio is one of the best sorce's for car audio on this site.all his answers are spot on all the time.BIG props to my man N2audio and thanks for the help with my truck. i would go to ask a ? and 90 % of the time some one all ready asked it and N2 answer it. my trucks done now I've got to much time for my wife so I hade to get a side project. a sweet little acura Legend just need some beat