Thanks for your reply. Yeah, I really should put come ground vias to connect the two planes together. Thanks for reminding me of that.
There's so much empty space, so I'm trying to move some small stuff around in order to reduce the space, and therefore the cost of the PCB boards.
Regarding the feedback path, the issue I have right now is that it starts at one end of the inductor, PCSP, and it has to connect to pin 6 of the IC. The pin placements are rather difficult to route without putting the components closer. How would you recommend routing it from C13? I'd have to move it around, but right now, it's still hanging at the top left unless I re-orient the inductor.
Regarding C12, I can move it , but as long as it's connected properly, the sense resistor can just connect to C10 instead of C12, correct? The two caps are parallel, so as long as they are connected at the same node, I can put C12 across from C10 and move the components closer together to save space.