Hello MRXRAY
About our question, i use normaly aperture priority mode and set the aperture depending to the motive. For White Blance i use the Auto-Setup, only when i use the Magic Filter and now flash, i set it with a white-card. One of the important things is the metering mode, for underwater pictures i use only "Center" or "Spot". For some special picutres without flash i set speed, aperture, ISO manually.
But the most important thing for me is to shot in RAW mode to have at the best possible quality for your images.
About your images, i would try to go closer and concentrate more to one detail. I think that way give you more chance get good results at the beginning with the new setup. Wide angle like picture two is difficult and not so easy with with poor visibility.
Look forward to your next pictures.
I will further this week make some more dives and hope i can show you some results with both lenses.
Tino