Back to the game, 500mil?

Hey GAZED maplers! I just recently came back to the game after being gone since 2008. Lots have changed. I decided to make a mercedes and want to know what's the best way to start building up again with roughly 500mil of funding? There's all these new %stat equipment and potential stuff (i've picked up on this a bit). I still have an old 18 attack work glove and picked up a clean tempest weapon with epic potential through the event. I don't really know prices after being away from the game so long, so any start up help would be nice. many thanks!