Sorry Brother .
But I have a few problems with your post. Sharia is not something that an individual understands. It is the rule of Islam iimposed in the light of the Quran , Hadith and best practice, implemented by people who have the relevant knowledge of Islam. It is important that it be done this way otherwise individual interpretation of Sharia would lead to chaos.
Secondly, it is not the problem of new Muslims,but a collective responsibility of ALL Muslims to implement Sharia. I am not pointing fingers at anyone in particular, but the so called born muslims are nowadays so ignorant of islam that it is almost akin to a state of being a nonmuslim. I will include myself first in this category.
You are right in your supposition that following a particular school of thought isnt exactly right, but the reason is one of convenience, ie then it becomes imperitive for all muslims to extensively read and understand the Quran, Hadith and history of the Caliphs of Islam, interpret all school of thoughts and adopt the best method that is available. I and most muslims do not do that.
Your impressions about the schools of thought are well thought out and commendable. However, the problem is one of the study required for this as most of the books are in Arabic and people often spend years to collate information form various sources to get to a logical and thought out conclusion.
Then we have the Western, pro democracy,wine drinking and womanizing , liberated Muslims, and the Mullah with his typical tunnelld vision and his own vested interest, not necessarily backed by reroducable evidence and certainly sometimes totally illogical thought process,for their own vested interests, want to change everything so that it can be distorted to their own tastes. The good intentions may be there but the understanding certainly is not and in the long term they will cause more harm than do good.
So all in all it a very difficult issue, which needs a lot of thought. If for instance you want ot impose Sharia, in Pakistan, I would firstly have an impartial referendum asking the people what they want.
If the answer is yes, then set up a senate of all the religious schools, supervised by a senior judge with a knowledge of Islam to frame the laws. Because all the laws in accordance of our constitution, should be comp[liant with Sharia, we should hear all schools of thoughts, invite foreign experts if necessary for their interpretations and then have a rule that is accepted by all which is enforcable.
the third thing is to change all the carriculum and enforce a national carriculum in ALL school to create harmony and understandinfg and respect for law.
Finally have a strong and independant judiciary, which is impartial and can impose the law without fear of recrimination.
Then perhaps in a generation or 2 we might---just might get there.
WaSalam
araz
PS: I would be very happy for you to correct any of my misunderstandings.
jazak Allah o Khair