vulkan16

I have searched this forum and I found lots of good information but I am still confused where it comes to a couple of things. First things I know:

18" wheels wont fit AMG calipers
Rotors will be waaaay more expensive than anything else


Things I have questions about:

What is the exact size of Rotors for front and rear. I have read that front rotor diameter is 380mm and somewhere else its 390mm. Can someone provide the rotor dimension for the rear as well.
Would those fit on the front:
http://www.autoanything.com/brakes/77A7561A3866615.aspx?k_clickid=72f340ae-bc8d-4a75-a113-0130e4c07655&adgroupid=9827&k_trackingid=274x28014 1040606&kpid=10406-7561-125.35104&productid=280141040606&kc=ffsku&DZID=PLA _g_1297481_730736107_35013377021_pla_280141040606_ 10406-7561-125.35104_9019608_c&utm_source=g&utm_medium=cpc&ut m_campaign=730736107&utm_content=35013377021&utm_p roductgroup=280141040606&utm_product=10406-7561-125.35104&gclid=CjwKEAjwgZrJBRDS38GH1Kv_vGYSJAD8j4 Dfsmoiq9TTpyAUJxrb6HlB78uRWJ4rCZA6tNTLFOfRahoCL3Hw _wcB
Are the front and rear calipers bolt on?
Should I do both or front is just enough?
Should I consider getting anything else other than calipers/rotors/pads combo?

Thanks in advance.

Greg