nj, it would be much wiser to do it the other way. In the presence of the base, your secondary bromide will more likely undergo E2 as you are going to form a more stable alkene (in comparison to having the bromide on the hexane chain).
If you reverse them hexyl bromide, and isopropanol, you avoid that issue more (still not full proof), and you also are now doing SN2 on a 1° carbon instead of a 2° one, which is also faster.