DONT GO IN "Some forest" !!
Make sure its safe, you have permission etc etc as you dont want the armed respsonse unit 'popping a few caps in yo ass' if you get my drift
.. Go to a recognised and safe site.
(If air is available) .. Go for an SLG (120) Steely tank (50ish) Reloader 2 hopper (25) and then make sure you get a good comfy mask .. I recommend e-vents, grillz, flex's, proflex's etc
It helps a lot more than you'd think. And then get a pack - pods etc.
P.s. Check your local site if you're allowed an electro marker or not .. and i Air or Co2 is allowed.
Best bet is to find a close site that does walkon days .. which - put simply - are 'brig your own gun days'