1. The game was already a pile of fucking cancer, now it's even worse.

Explosive rounds on snipers, more and more armed cars, a new breed of cancerous planes, the same cancerous planes, but now with infinite ammo and thrice as resistant, given out for free when doing smuggling missions, etc... You'll have a lot of fun, I'm sure.

1. Depends on if you have a good income source. If not go for vehicle warehouse and office. The bunker is not that great of money maker, unless you pair it with something active (i.e.: vehicle sourcing). Oppressor is neat to drive, but if you need a cancer shelter I'd recommend trying to get either the APC or the MOC.

The APC needs a second player to shoot while moving (you can switch seats pretty quick when stationary WHILE STAYING INSIDE) but the mere fact that you're driving around in an APC should scare off most stuff (explosive rounds, oppressors and/or other cancerous spam fest) but will attract most armed airplanes.

The MOC also needs a second player to shoot on the move and you can't switch seats to a weapon unless you get outside. You should consider the MOC because you will need it anyways AND it's pretty heckin tough to destroy (the cabin part too so you can dump the trailer anywhere).

The Oppressor is incredibly fun to drive around and allows you to get around pretty quick but you'll get targeted as people view anyone on an Oppressor as hostile. The thing is, while the APC makes you a target, it can sustain a shit ton of damage and explosive rounds. Now that everyone has explosive rounds, Oppressors are a lot less fun to drive. Even if you don't plan on shooting anybody with it.