Reginald Mathalone/NurPhoto via Getty Images When SpaceX goes public in mid-June, retail investors are expected to pile into the stock they've waited years to buy. Elon Musk is expected to allocate 30% of the IPO to retail traders, well above usual levels, according to a Reuters report. But just because you'll soon be able to get into the stock, should you? Bulls say SpaceX has a massive total addressable market and a visionary founder with a track record of success. Bears argue the company is far too overvalued and still unprofitable. So, would you buy shares of SpaceX on day one? We asked four market pros whether they would. Altug Dincturk, chief investment officer at Madison Partners Brandon Bell/Getty Images Would you buy: No Dincturk said his firm will wait for the dust to settle after the IPO to decide whether to buy. While he likes the company, he said IPOs are historically a risky time to get into a stock.…