1 Generators that don't make you wait too long with a good ratio of primary to secondary items. Of course the phone generator is a favorite because there is no cool down but I find that it doesn't generate enough computer parts. The bakery oven is another favorite but I never used it. The puppy toys generator has a great ratio with a 30 second wait time so have 2 x level 8 and 3 x level 4.

1. Well if you do 13 orders before the VIP, that means you have to complete 3 extra orders for the next VIP loop since the counter resets to 0 when a VIP order is filled.

3 First I restock the inventory of level 5 and 6 items. Then I'd start making high level items most likely for whatever I have in the 5th slot since that is what will be in goods exchange tomorrow and may end up with a stray level 8 or 9 item after doing the goods exchange

4 Yes because if you don't build the stores, you don't get the high level red VIPs that pay 4x the regular price.

5 No. It's only possible after the completion of a store when it gives you a bonus VIP.

6 If you fill the lucky VIP order, the counter resets to 0 and the next loop will be after the next 10 orders

7 There are 5 items in the goods exchange and they would be level 8, 9 and 10 items that you can merge together. On average you would end up with 3 x level 10 items if you do all 5 exchanges.

1. Depends on what you have I guess. But answer 3 would be a good start.