1. Those 33 skill points are best used in energy or stamina - unfortunately it sounds like you put them in either attack or defense - which does essentially nothing.
2. Don't level up like crazy unless you are doing it in an event that at least pays out good prizes (LTQ, syndicate war). Furthermore, you'll start to notice the stats in your bracket getting much, much higher from now on in, as people at higher levels are more likely to have played in a large number of syndicate wars, completed more events, etc.
3. Use your cash to either participate in LTB events, or boost your IPH so that you are able to participate in the events in the future. Cash on cash weapons is basically only for people with super-high IPHs and relatively low stats.
4. If your cash is on hand it can get taken from you in attacks - but only $600k at a time (assuming your attacker goes 20-0 on you).