idk about the deployment/butt pack bag, but I have 2 crossdraw vests. (Selling the ACU)
If your of a typical size you can make use for them. I'd say you can fit at least 1 m14 mag to each M4 mag holder... If your short on money, then you can go ahead and get the vest, they have the basics of what you need, especially if you use m4/m16 or a similar mag gun... You get plenty of pistol mag/small pouches and a pocked with velcro on the front for a patch.
if you have money to spare you might be better off with a Molle plate/chest rig or whatever(several choices for Molle systems) and buying the pouches that fit to your particular needs...
Not trying to sell this so much as give more info, but you can see my pics of the ACU inside and out, and a list of features I typed up on my FS ad (
viewtopic.php?f=7&t=17686 )
Hope I helped some.
best of wishes