Second DL vid is reasonably tidy, good job. A few things to work on:
See how your hips rise just a touch before the bar leaves the floor? That position you are in when the bar leaves the floor is about where you want to be when you're 100% tight and ready to engage the pull, so i think you're dropping your hips a smidge too low. But don't think about your hip position - reach down grab the bar, and then pull your chest UP. You're almost there, you just slightly worry about your hip position but it'll take care of itself if the other land marks are met. The Nuckolls article in the HC Thread might illuminate this better than I can.
Try and keep the bar close to your shins using your lat muscles. That's why you see KC do the zombie arms thing before lifting, he's just cueing himself to activate his lats. They also help set your back position a bit.
Once the bar is at about mid shin, you want to be driving your hips
forward, using your glutes. It will feel awkward, but really emphasize a good glute contraction at the top of every rep. "HIPS" is basically the most yelled cue at our place, because getting the glutes driving the hips forward as early as possible helps heaps with the squat and DL. Your lock out is a bit "soft", im not really sure how to explain it... If this is too unclear i'll try again.
Bench press
this is a big improvement. Still need to keep working on it, but if you can get your leg drive on the early reps to be like the last grindy one, then you'll be capable of more reps. Maybe spread your feet a little wider and really concentrate on driving your heels down. i think you can get a bit tighter in the setup too, with more weight on your traps, but it'll come with practice. A bit of chalk on your shirt or on the bench makes a big difference in you much traction you can get.
nothing in any of these vids to suggest you shouldnt keep adding weight.