Arguments against Quran Only/Hadith rejectors

Re: Arguments against Quran Only/Hadith rejectors

Laa ilaha illAllahu Muhammadur Rasool ullah.

Anybody who has studied the Qur'an will know that, at face value, the Qur'an is the nucleus, the framework, the core. Then comes the Sunnah, which builds up on the core/nucleus/framework. They are NOT equivelant because the ahadith ADDS to what the Qur'an says (also think about whether or not you see the sunnah as a divine source or not). Then comes Ijmaa' (Social Concensus) and then Qiyas (Analogy). THESE make up the four sources of ISLAMIC LAW! The Qur'an at the core, layered by the ahadith (the Sunnah) and then varying in ijmaa' and qiyas, neither being allowed to contradict the former (Q & H).

If you reject the hadith and sunnah, you reject the Qur'an which says explicitly to Obey Allah and His Messenger, and thus you reject the Prophet (s) and his claim to Prophethood ... What's the kalimah?
Why would Allah say in the INFALLIABLE Qur'an to 'Obey His Messenger', if Allah knew that ahadith would become corrupted to the extent that it would be difficult to differentiate between the authentic and forged hadith? Do you see what I mean?