Mine is at 1.2 B+ now, so no one is kidding about dough. I've seen other CMDRs post their combat Cutter values as high as 1.6 B. And like aRJay said, you'll need a shed load of mats for engineering. Which brings me to my point; the shed load of time to invest in at least doubling your bank roll, and your material harvest. I also suggest you move to some place like LHS 20 to strech your the credit balance and lower your rebuy. It's surprising how much 15% off adds up to. A majority of the modules you'll be buying are available at Ohm City. Even if Ohm City doesn't have a couple of modules, it's likely you'll find most of what you're looking for, fairly close.
Rooks o7