In addition to the shoppIng list for Cherry, Hank goes home, grabs the HK 227 loaded with a clip of Ex-ex and two full spare clips for each gun (regular ammo for the Ingram), as well as his medkit and autopicker. The remainder of the time will be spent setting up the appropriate bombs--the main IED in the car (assuming Cherry comes through; if not, he'll use whatever he can find at the site that seems appropriate), and wall bombs 30 feet and 60 feet before that, as well as one 20 feet after the IED. The first two are redundant attempts to prevent the second vehicle from leaving, while the last one is in case the hummer makes it past the IED.
This does, of course, assume he has enough time; obviously, if time is an issue, he'll be placing the bombs in the above order. Please let me know how many options he has.

Once everything is set, he
finds a good observation point from which to trigger the bombs as appropriate and settles in, chameleon suit (and the coating on both guns) fully active. The spike strip can't be deployed until the convoy is coming, unfortunately, as that might take out some normal traffic heads off to the meet-up.
Serious, let me know how many rolls I need to make for all this.
Edit: Just modifying to match what actually happened. 