While you want enough supplies at your apartment to be able to "bug in" for a week or two, that can't be your long term plan. So what I'd do is store food and water stockpiles at the same storage unit where your camping gear is. Consider this as your second bug out location - if you had food/water there it might be more defensible than your apartment is. But regardless, Make sure you have a vehicle that can hold all your gear and stockpiles. Then if the SHTF, bug in for a week or two, then load up your weapons, go to the storage unit, then either stay there for a while or pack the truck, and bug out.
You might also want to have some extra fuel stored there (you'll need to put some Stabil in it, and rotate it every couple of years) as if the SHTF and you do have to bug out 2 weeks later, fuel may well be hard to come by.
One final thing: "Head to the hills" does not a bugout plan make. Pick several locations, pre-scout them, make sure you have good maps to them and know all the alternate ways in to them. If you have friend(s) with land that's best, as there's low chance of someone else getting there before you and preventing you from using that location. But also realize that there'll be a half million people in Denver who all think they can "head for the hills" and become mountain man survivalists if need be. Find a way to not compete with them, as in, go somewhere less likely to become people saturated.
Hope this helps.![]()