Here's what I came up with, it's a good start, and includes a bunch of stuff that your installers will love you for!!
1) Nice ladder racks for the vans, nothing beats a simple and easy to use ladder rack from
www.weatherguard.com excellent products. The quick clamp ones are awesome.
2) Well equipped hardware bins. You'll find yourself running to the hardware store a ton of times if you don't go upfront with the hardware.
3) Invest in good drills like Hilti or simillar. Your life will depend upon your drill, get a nice TE5 or something for each van and then outfit it with the necessary complement of bits. Hammer bits for the brick and some 'regular' bits for the normal mounting. Hilti is a wonderful product, I have never had a single problem with any of their products, and now they sell in Home Depot!
www.hilti.com I really like the QwickCon stuff from them for concrete applications, and they have a TON of stuff for mounting nearly anything in any type of material. I wouldn't use anything else.
4) Buy a 24' extension ladder, an 8' step, and a 4' step. I'm a pretty tall guy, so a 6' ladder is useless to me. In your case it may be better to go with 6' and 10'.
5) A nice Sat meter really makes the peaking go faster. I always like the DigiSat II. A great little meter that uses the receiver power to peak, you can also use a battery in the meter. Pick it up almost anywhere or here.
www.orbitsat.com.
6) A good company for wire running products is Labor Saving Devices.
www.laborsavingdevices.com. The creepzit is great for flexible applications, or the fishstix's for when you need a 'stiffer' rod. For pop ceilings, raceway and such.
Well, it's a good start, I thought this would be good info to share so I posted, and also sent you an email.