After further reading and talking with a few teachers, this is the system I decided on.
Each morning when my students enter the room and put up their backpacks and folders, they will also make the daily five round choice. In the beginning, the only choice in the pocket chart will be read to self. I want my students to become familiar with the routine as soon as school starts so I am going to have them place their picture in the pocket chart even though all of the choices are the same. They will find their picture and place it to the left of the read to self icon.
After we have built our read to self stamina to 7-8 minutes I will add work on writing. Then students will be able to choose which round they do first- read to self or work on writing.
As we add more rounds, I will add more icons as choices. Eventually, there will be three choices on each row. Every row will have a read to self and work on writing choice as well as one other round choice. Students will place their picture to the left of the row they want.
You can find the daily five icons I used from Lindsey at A Year of Many Firsts here.