Best position battles

Preseason camp starts Monday (never thought it would arrive), and I'm curious about position battles that could drag on toward the Rice game. With new coaches, of course, ALL positions are up for grabs, to a degree, but some appear to be more up-for-grabs than others. As I see them:
LEFT TACKLE: Vincent Chase is the stronger guy and a fifth-year vet who has buried people on the college level with his blocks. Now he has added a bunch of strength and size (what was it that was reported here, he's up to nearly 280?) Kelvin Beachum, on the other hand, is young (redshirt freshman) but has a world of potential - he's athletic, quick, has the long arms needed in a tackle and apparently works his tail off. Both will play, I'm sure, but I'm guessing that at the start of the season, at least, Chase starts.
FREE SAFETY: De'Von Bailey has the size and speed, but his contribution last year came mostly on special teams, and he did little on defense. Tyler Jones, on the other hand, isn't very big and isn't the fastest guy in the world, but when he got thrown in there last year, the dude was around the football all the time and made a lot of plays. My vote: Jones.
KICKOFF RETURN: Maybe Coach Gansz mixes it up by putting two guys deep on kickoffs, but if he goes with just one guy, it would seem likely that it's a tossup between Jessie Henderson and Aldrick Robinson, with the possibility of Emmanuel Sanders thrown in there. All three have the wheels for the job, but if only because of the roles Sanders and Robinson play in the offense (starting receivers who are expected to be huge in Coach Jones' offense), I would say Henderson gets the nod. He's been very effective at it, when healthy, and there's no reason to change that up now.
LEFT TACKLE: Vincent Chase is the stronger guy and a fifth-year vet who has buried people on the college level with his blocks. Now he has added a bunch of strength and size (what was it that was reported here, he's up to nearly 280?) Kelvin Beachum, on the other hand, is young (redshirt freshman) but has a world of potential - he's athletic, quick, has the long arms needed in a tackle and apparently works his tail off. Both will play, I'm sure, but I'm guessing that at the start of the season, at least, Chase starts.
FREE SAFETY: De'Von Bailey has the size and speed, but his contribution last year came mostly on special teams, and he did little on defense. Tyler Jones, on the other hand, isn't very big and isn't the fastest guy in the world, but when he got thrown in there last year, the dude was around the football all the time and made a lot of plays. My vote: Jones.
KICKOFF RETURN: Maybe Coach Gansz mixes it up by putting two guys deep on kickoffs, but if he goes with just one guy, it would seem likely that it's a tossup between Jessie Henderson and Aldrick Robinson, with the possibility of Emmanuel Sanders thrown in there. All three have the wheels for the job, but if only because of the roles Sanders and Robinson play in the offense (starting receivers who are expected to be huge in Coach Jones' offense), I would say Henderson gets the nod. He's been very effective at it, when healthy, and there's no reason to change that up now.