In a few words Yes more bottom time, surface intervals can be shorter as well.
Depending on the table/computer your using the TBT for air at 60` is about 55 min. With nitrox, depending on the mix, you could be down longer than your air supply would last and be within the NDL. The depth that you indicated is the optimum depth for nitrox where it is most advantageous.
With everything in scuba there are things to consider. During your nitrox class you will learn that the partial pressure of oxygen and total oxygen absorption in your system are things that you need to consider. You track these similar to what you do with residual nitrogen today as oxygen toxicity is something you need to be aware of.
Everything that you need to know will be covered in your basic nitrox class so ask lots of questuions and enjoy!
Take care and Best Fishes!! `•.¸¸.•´¯`•.¸>