You’d have enough food to live you out for years but water won’t be clean filtered water after a while since apart from all the shop bought water it would be impossible to keep cleaning it. Also, on your own you’re gonna be lonely so there’s only so much u can do before killing yourself.
Sorry but it's kinda the opposite
Unless you get certain canned/airtight food then you won't have much for the long term apart from edible plants and nuts and insects in the wild (small mammals if you know how to hunt and cook). I guess you could possibly learn to grow your own crops for the future though. Water is easy to get, since you can store a lot of already bottled, clean water which doesn't really go off (though water is relatively heavy)
Plus, just go to a pharmacist and get a FUCK load of water purification tablets. Can also use one or 2 of these after boiling water to get rid of any remaining heat-resistant pathogens. If it gets to it, just make a DIY-water collector from some tarp then drink rainwater
No offence but you wouldn't survive for very long XD.