^Then hypothetically what will be your beleif towards me, if i declare(God forbid) that i am Jesus, whom Allah has sent, will you consider me in such case a muslim or kaafir?
You see, you still have very little knowledge of jamaat e ahmadiyya. You must learn something before having questions about it.
When Ahmadis say Jesus of Nazareth (AS) died, why then do Ahmadis take Hazrat Mirza Ghulam Ahmad (A.S) as Jesus (AS)? Learn that first...
But then again, to answer your question, if you just declare yourself Jesus (AS) you will have to then produce Imam Mahdi from somewhere, or else it will go against your Islamic beliefs. Islam is now how your ullamas have understood it, anything contradicting to that (even if you have reasoning from Quran/hadith), will be declared kafir not by Ahmadis but by your own Ullamas..
Secondly, people have declared themselves such and such ever since after the death of Prophet Muhammad PBUH, where do you see them all? where are their jamaats? what happened to all of them? i'll tell you.. Allah says in Quran that if someone swears upon me and say that I'm sent by Allah and he's lying, Allah will cut his throat ( make him die ).. and His followers will be left without the help of Allah and are hell destined. ( cant quote the exact verse from Quran as i cant remember ) but point is.. Allah will help you If He has sent you, if you wrongly swear upon Allah, He'll show the entire world of what happens if someone lies on His name. We see totally different scenario with Jamaat e Ahmadiyya. Alhumdulillah, its been 100+ years of khilafat established in jamaat and despite all attempts by Mullahs in Pakistan,India,Bangladesh,Indonesia ( just to name a few ) , they have been continuously progressing, whether it be in Northern side of the world or it be deserts of Africa. Ahmadis by only the grace of Allah the almighty have translated Quran in so many different languages around the world. Truly, if one wants to see the spirit of Islam, must see Jamaat e Ahmadiyya.
Thirdly, if you claim to be Jesus (AS), then you will be kafir declared by your own ullama because according to their understanding of Islam, Jesus (AS) is to come to Earth bodily alive, as He was taken 'up' to heavens somewhere.
Fourthly, you were born with ur parents, Jesus (AS) , upon his second coming was suppose to come to Earth bodily ( as per your ullamas understanding ) and thus from them, the issuance of kufr fatwa.
Make sure when you claim to be Jesus (AS), to start breaking the cross and kill all the swine in the world ( if you dont, you are considered kafir as Jesus was suppose to do that literally according to your very own beliefs ).
Question then really is that, if the Islam which is understood by Ullamas is the right Islam then theres no need for jesus or Imam Mahdi to come, but the fact that there is a *need *of one is certain that Quranic scripture will be left untouched but everyone will have their own way of interpreting it, based on what they think it means.. ( NOT what Allah has told them .. as theres a major difference ).
PS: see Ahmadis will not issue a fatwa against you as Jesus (AS), until and unless you come as Jesus and start preaching Bible ( for which He actually came to the world.. your job as Jesus would then be just to change Bible where it got wrong.. you will get no opportunity to interfere with Muhammad PBUH's shariyah ). If you come as Jesus and preach Islam, then my friend you are not the Jesus who was sent to bani israel.
So conclusion is :
You being Jesus will have to provide Imam Mahdi too ( according to your own Ullamas ), or else the label of Kafir.
Being Jesus means killings swines and breaking cross or else the label of kafir.
If you had come from heavens directly, then that would make me think positive about you, but if you were born and decide not to kill swine and break cross ( in its very literal meaning .. as in really going around the world killing swines etc ), then buddy, theres already this person ( may Allah be pleased with Him ).. whom has come earlier than you with the same idea. Allah reveals His secret not to anyone but His prophets.. we'll see what He will reveal you.
PS: will come back sunday night to answer you , if you quote me back.