Possibly starting a food truck

Hey everyone. First time posting and should be posting a bunch over the next month to get up to 30 posts.
 
My friend and I are looking at starting a food truck business. It will be a side business for both of us, since we can't afford to give up our full-time jobs at the moment. We really enjoyed looking at the different builds on the forums and plan to post our as we trudge along.
 
Two quick questions:
 
We found a GMC workhorse stepvan. The kitchen area measures 7' wide x 12' long x 6'2" high. Do I have enough head clearance to install a hood vent and be able to cook efficiently? Anyone with any experience with this type of van? It's the FI engine.
 
Thanks in advance,
Matt Brown