I reccomend that you not become a MS. When they ask you if there is any reason why you should not be appointed, say "yes", and then say you're not in a position to handle the responsibility at this time. BE FIRM. Tell them that you can serve Jehovah more acceptably as a regular publisher for a while longer. Make sure you tell them its not due to any scriptural wrongdoing on your part. You believe that it would be detrimental to your spirituality to take the extra responsibility right now. The answer is NO, not, "I'll think about it" its "NO." You don't have to tell them you have doubts, just say no.
Of course, if you want to be an MS who gets everything dumped on him so that you are not only irritated with playing along with the BS you have to listen to, but are also loaded down with busy work that no one appreciates, go ahead.
Ultimately, do what you think is right. Just know that YOU DON'T HAVE TO SAY YES WHEN THEY APPROACH YOU ABOUT ACCEPTING THE ASSIGNMNET.
Expect a shocked look for a response, this is highly unregular and unexpected. Too bad.
That's my two cents for what its worth.
W.Once