The first thing to remember is that your packaging plant is over to the right. You don't have to save up the 4000 gold for that.
The second step to remember to click the buildings to speed up production, being careful to never blow them up.
Keeping those things in mind.
Upgrade your warehouse and your car once immediately. Sell bears. Sell the first 5 leg of pork. Upgrade your warehouse one more time. Collect 10 more leg of pork. Sell bears. Sell the pigs as soon as you have 10 legs of pork. This should give you enough money to (at least) buy your meat cutting shop (be careful with how much water you buy. You should wind up with almost no grass left on the screen when you sell the pigs). If you wait to buy your styrofoam trays it will also give you enough money to buy your smokehouse. Sell bears. Buy the styrofoam trays as soon as possible. I actually bought the trays while the pigs were headed to market and had to wait while I sold bears to be able to buy the smoke house. Then it is just a matter of process process process. Keep an eye on your houses and how many times you can click them before they redline, but push them right to that edge. You should come in under 5 minutes or just over but still with plenty of time before the Gold deadline.