Need help on these levels

Cheese Street 3 & 6, Crossroads 8.ger

EDIT: I only need to get gold on these levels.

MAKE that 2nd to the last Level and the Last Level

Cheese Street 3
Sell the ostrich as soon as the level starts. Update storage twice and the truck one time. Buy 2 cows and 2 chickens. Send the truck for 5 flours and 5 cream. Buy powder plant, bakery and confectionery and upgrade them all level 2. Start baking cakes and send two chickens to the market and buy two pigs. Send the plane for 5 ice trays and 5 creams. Send always at least two milks to the separator. Buy another cow and get meat cutter, smoke house and meat packing plant. Send the plane for 10 creams and then for another 2 creams. Keep all building running at all times. Best Time: 04:34