I dislike the fluoroshield with DAPI. The DAPI remains in the tissue and causes many problems such as increase in background fluorescence. Rather, just buy a good mounting media for fluorescence without DAPI or make your own using Mowoil.
The DAPI stain can be done at the last step as follows: 1 min incubation in 1:1000 dilution in PBS from 1 mg/mL stock sol in water and then wash thoroughly. DAPI is a very good fluorophore if used correctly.