I really liked Kallenberger coming out. Hard to see him inside, though. Your thought of moving Jackson inside is interesting. Assuming Render and Reynolds (and Levi...) make the necessary leaps, that would be an imposing offensive line.I think they're trying to get Banwart and Duwa as many reps as possible at C with an eye on one of them bring the starter in '19. That's not to say that one of those guys isn't capable of winning the job this summer and pushing Render back out to guard.
I like the growth I've seen from Reynolds. I think he will be solid at LG. Levi and Landan look to be competing at RG right now.
I could also see a scenario where Kallenberger pushes is way into playing time at RT with Alaric Jackson moving inside to RG.
Need to find the best five. They're trying a lot of combinations out in spring ball.