If you're able to put the Briles connection stuff in the past, it's pretty simple....

Elko, Odom = Safe choices with higher floors and lower ceilings

Lebby = Less safe choice, lower floor and higher ceiling

If we want consistency, maybe a coach that will be here 7-10 years....go with a safer choice, one of the defensive minded guys. If we are ok with losing a guy in 3-4 years to a blue blood but possibly making a run at the SEC in the process, gotta go with an offensive minded guy that can draw in top notch QB and playmakers.
We have a better chance at landing local defensive studs with an offensive minded HC, than reeling in top QB and WR talent with a defensive HC.

Not saying Lebby will succeed...but I like gambling on a young OC more than an older DC or defensive minded coach.
Just my opinion