Ordo domus Sanctae Mariae Theutonicorum Ierosolimitanorum

During this week an idea of extending church in Marienburg appeared. Basically we will be expanding this to the line of the outer walls, like sth which can be seen in High castle of Marienburg, like u can see below:
http://www.deutsche-schutzgebiete.de/webpages/Marienburg_Die_Marienburg_von_Sued-Osten.jpg
http://wolneforumgdansk.pl/files/gruss_aus_marienburg_313.jpg
diff perpective
http://www.polskaniezwykla.pl/pictures/original/289670.jpg
Of course level of details presented in this gothic stronghold ( calling it just "castle" is simply wrong ) is impossible to recreate in Medieval Engineers, so we will be just focusing on basics ( extend this to the outer wall, create maybe hexagonal shape and so on )
2nd thing is to change ceiling type. Again - ME is really limited in that matter so i think we could just focus on making simple wood + diagonal timber ceiling. Not exactly stone arch one.
Like this http://www.zamek.malbork.pl/uploaded/fck_files/image/obrazkimuzeum/sale_i_zabytki_w_salach/kosciol/kosciol1b.jpg
( This isnt true ceiling of church this is just temporary one added by reconstructors )
3rd we should finally add a proper name to this church. Since it is the most important thing in our castle naming it should be natural thing ^^ Waiting for ur suggestions.