Seem alright.
canoeing can be a few causes -- heat, light, nutes... due to auto's being touchy and how lush it is (some tips yellow? hard to see under grow light), i'd say dial back nutes 5-10% and see what happens. After 8 weeks, you have a fairly healthy plant so things must be roughly okay.
Just add a little extra water to mix. Keep pH around 6.5-6.8. You have a ton of perlite, so i'd treat it a bit more like soilless grow. This isn't bad. Drainage is great. In general 50/50 is as high as yo need to go. Coarse vermiculite is an excellent option too, as it provides some silica too.