As mention by bro binosage, do not worry about the bacteria and coraline algaes, they will colonised as your tank mature (ideal parameters, of course). If you are new to this hobby without prior experience, please let your tank go through the full ANN cycle like LemonLemon had always preached .
Take the waiting time to plan and read up what you want and have in mind. Scaping dead rocks does have its advantages, you can take your time stacking them outside your tank, epoxy them before placing them in your tank. Live rocks users seldom have that kind of luxury.
Just be patience or be very rich