if your going to get it, and I do not recommend that my friend, just get the DVD suite... 99% of all the downloads/extras/add-ons/and missions require almost all of them...
but yes, you are correct... basic VBS2 with those 2 packs will get you in the deserts of iraq... but (and again I do not recommend anyone buy VBS1 or 2 just because of the cost... it truly is not worth it if you don't have a honest reason... heck OFP with all the FFUR packs will give you most of what you see in VBS1) but get VBS2 instead of 1... it comes with detailed and excellent maps of the green zone and Ah...ah...ah hell I can't remember, lol, another hot area in Iraq.
but again, I do not recommend you pay these much money for VBS1 or VBS2... stick with ArmA, desert maps and maybe Iraq will come soon.