Your two dive sites "north wall" and "white hole" are great dive sites that suits all levels of diving, you can dive them from an advanced level doing a multilevel dive to maximize time and depth or from a ni=vice level limiting the depth and still seeing tons of stuff.
When we meet up we discuss your level of diving and what you would hope to achieve from the dives, the dive master/dive instructor will then decide on a dive profile that will suit your needs. All to create that perfect day of diving for you. The boat ride out is about an hour, and both dives are planned for around 45 minutes but dependent on dive profile. Lunch is included on the beach of the silk cayes, and a bonus snborkel at the end as well, at turtle alley with turtles, stingrays, eagle rays and nurse sharks.