4 takeaways from Jersey Mike's IPO filing, from a $41 million jet to plans to quadruple stores

Jersey Mike's has big expansion plans, according to its IPO prospectus. Bloomberg/Getty Images Sandwich chain Jersey Mike's is gearing up for an initial public offering. It spent $41 million on a jet for its founder and has big expansion plans, according to its IPO prospectus. Here are four interesting tidbits from the restaurant chain's 220-page document. There's a lot sandwiched in Jersey Mike's IPO filing. The restaurant chain is gearing up to go public in what's on track to be the…