You'll not want to be wearing a hoodie under a vest for long mate, not unless you're sniping. You'll get way too hot running around!
I'd say that of all the noob moves you could have made, buying a molle vest without knowing what you need isn't a bad one. You probably should aim at getting your own eye protection next. Given that you choose something that fits you well enough to be safe, how well you can see is the next most important thing.
I've found that interwoven mesh is the easiest to see through - it doesn't fog; the holes are of intermediate size, which means that it disappears from view when looked through and only approx 1.8mm grit can get through.
Hero Shark perforated mesh is probably the toughest, but it also has the largest holes which can allow BB fragments through (although they don't actually do you any harm) and counterintuitively the larger holes do not make the mesh disappear from view more easily, it remains in your vision.
Most mesh goggles you will find advertised are perforated with small holes; it must provide the best protection against the possibility of fragments, but tests conducted on this forum have shown that some makes of it are only just up to the job when tested to destruction; despite having the highest ratio of metal compared to holes, it too disappears from view, but it does darken your view like wearing shades.
The only other type you're likely to come across is intermediate sized hole perforated mesh fitted into masks; it's pretty much like interwoven mesh except that it darkens the view more and becomes more obvious in your view if you glance rather than turn your head.
There are loads of goggles with lenses, but to some degree they all fog up. You can combat this with wipes, spray, lens coatings, fans, etc. but those measures are by no means perfect. Obviously, so long as they fit tightly to your face, they are safest, but ironically the tighter fitting they are, the more they will fog. Also worth considering is that you can bend mesh eyepro to better fit your contours, whereas polycarbonate lenses are the shape they are made so you can like it or lump it...
The final thing to consider is this: what is more likely to be unsafe, the chance that a BB fragment could penetrate mesh retaining enough momentum to damage your eye (it has not ever been reported to have happened so far), or the chance that fogging will cause you to trip over or run into something/body and fall onto something sharp?
As you say, boots are also important. Surplus Lowas are getting pretty easy to get cheap these days...
As for mag pouches, you need to check that they don't have dividers inside if you intend to use them for G36 mags, or cut them out, but generally a pouch that will fit 3 NATO / STANAG / M4 / SA80 mags stuffed in will hold 2 G36 mags with enough space to just about get them out easily enough but, unless you use a dump pouch, you should plan on 1 G36 mag per pouch, because you'll never get an empty one back into a pouch quickly with another one already in there. Of course, if you use the lugs on the sides of G36 mags to lock them together in pairs, it gets easier to deal with them.
Hope this waffle has been of some use to you