I'm looking for some feedback on my squat and deadlift. Brief background, I've been lifting most of my lift. Played pretty much sport in HS and baseball in college. I ended up tearing my hamstring about 7 years back and have tried to squat in the past, but the next day I would wake up in pain. Last summer i started squatting again. I kept it light and worked my way up slowly. Then in October started doing 531 and last week I hit 315 for a fairly easy double. I want to make sure there isn't anything glaringly wrong with my squat before I start shooting for 400. In the video is 265 for 5.
Also, I've always loved deadlifting and have used a conventional stance, however, last summer I hurt my back pulling from the floor and haven't been able to since. Today, I decided to pull sumo and matched my conventional PR of 405, despite never attempting more than 315 in sumo. I tried to video my 405 tonight, but the camera slid and you only see me knee down. So here is 315 for 2 right after the 405.
I'm 6'5" 260. thanks.
TL;DR: Want help making sure I'm on right track.
EDITED: Added cliff notes.