Nice bruthah!
What week is that? As far as the feed, it looks like maybe you started the flush a tad early? Either that or not enough N (not sure on the other nutes). But it appears to be a timing issue. At this point in that plant's life, it looks like it wants more N. Next time you grow it, you'll catch it. But overall man, very nice!
As far as the crunchy leaves and the curling tips, it looks like you got it a lil nute burn a couple times. As far as the dead leaves, sometimes the leaves brown and crisp if they are lacking light, so it's hard to tell.
New tent, nice lights! I'm happy for you man! And the bottom pic looks great. If your tent came with a scrog (sometimes they do) I would lollipop, slap on the scrog and flip asap. Or just get some trellis net and lay it over it. The size that plant is now, when you flip it, that's going to fill that tent. Either that, or stake it, lollipop and flip.
Very nice indeed grasshoppah!