I'd say stick with the corsair. You're on the right track for picking the class with the best dps. 
Soon you'll learn the disadvantages of being a corsair but hopefully you'll stick to the class because you develop a attachment to the class like me. O.o
Oh yeah about your money troubles. Somehow scrape up $10 from your lunch money or w/e. Save up like a dollar periodically. Then, go to a store that sells NX (like Rite-Aid I believe? I don't buy NX so idk) and pick up a $10 card. Then use the 10,000 NX and observe work glove prices in MTS. Buy the gloves you think are cheap and sell for the price certain people always put their WGs for. If you merchant work gloves buying them at the low end of MTS price and selling them for the high end, you rake in some NX pretty quickly. If you need mesos, purchase a chaos scroll and sell in MTS entrance for 100-120m, however much it costs in your home world.
Soon you'll learn the disadvantages of being a corsair but hopefully you'll stick to the class because you develop a attachment to the class like me. O.o
Oh yeah about your money troubles. Somehow scrape up $10 from your lunch money or w/e. Save up like a dollar periodically. Then, go to a store that sells NX (like Rite-Aid I believe? I don't buy NX so idk) and pick up a $10 card. Then use the 10,000 NX and observe work glove prices in MTS. Buy the gloves you think are cheap and sell for the price certain people always put their WGs for. If you merchant work gloves buying them at the low end of MTS price and selling them for the high end, you rake in some NX pretty quickly. If you need mesos, purchase a chaos scroll and sell in MTS entrance for 100-120m, however much it costs in your home world.