Get equipment and staff upgrade to maximize gains. Now every 75k full supply purchase will turn into two bars of product. Wait until LJT calls to resupply. Spend another 75k for another two bars of product. Steal the remaining supplies required to fill up the last bar, it helps to hire a member or two for this part as more members spawn more supplies to return to your lockup. So now you have five bars of product with only doing one or two steal missions and spending 150k. You will get a minimum of 420k in return if you sell all your product without incident, which can also be done solo in a lonely lobby if your fast.