Assalamu Alaikum..

Dear Bro..

You can check with AWQAF I heared that they have some standard drawings of Masaajid ...and also I have noticed that many of masaajid in doha have been contstructed smilar to each other or a copy of other...

Write a formal letter to AWQAF in arabic and request them hope they will help you..

ALLAAH'O AALAM

JazakALLAAH Khair..