The next step is to cut up the rails / stiles. The stiles are easy, they will be 4, the over all height of the box. The rails are going to be 7 plus the length that makes up the tenons. .155 x 2 works out to be almost 5/16. So the rails get cut to 7 5/16.
I kiss each end on my disc sander and make sure the rails stiles are all exactly the same length and squared off This is more important than the exact dimension:
A quick 90 deg mock up shows the joints should look good:
And all 8 rails and 4 stiles are ready to go:
Next stop, the router table