Britt, if you can get those flares looked after, you should be able to maintain the hooves pretty well on your in between farrier calls with just a rasp and hoof knife. Of course it depends how many horses you have and how often you can get at it, but I hardly ever need to use my nippers. Every week or two, I touch up my horses' hooves and it keeps them from getting out of hand.
It does appear to me that there is a lot of excess sole as well. Scrap at it with your hoof pick. Whatever is chalky or flaky is excess.
If you are still learning on hoof care take lots of pictures and look at them before and after. For some reason, some things show up a whole lot more clearly in a photograph than when you are right there with hoof in hand. If unsure of how to proceed, take more pics, return to the computer and draw all over the pictures. Then go back again. But, as already posted, get rid of the damaged wall section and all that flaring.