Really, the way the industry is going artists are going out to R&B?HIp-Hop producers like yourself(Darkchild, etc).Are you a producer or an engineer(there is a difference) But if you want to produce 'real' gospel music with like organs and drums and stuff...
you will find yourself dealing with alot more musical instruments quite possibly. Then you have background singers and stuff to mix in. Then there are things like vocal stacking(check out Beyonce), overdubs and all that kinda stuff.You may also want to check out books and articles online from leading producers and engineers If you are familiar with Protools and all that stuff then you will only have to adjust to the certain groups and vocalists. If you want to know more, you may have to ask more detailed questions! Hope this helps.