@Account Closed
1 and 2 - since you have $20k max, you probably have to look at financing. Also, I would recommend saving up more than $20k. While that can get you a downpayment, you need cash reserves.
3. I think in your situation, turn-key makes the most sense. You have a business you're running and seems like you are very good at it. I think your time is better spent improving/expanding the business than trying to learn and successfully run another business that involves fixing up and renting properties. That btw is very risky to pull off remotely.
4. This is very location specific. AZ might have less damage from snow/rain, but have higher prices than midwest.
5. I have always been told and believe that if you don't have a ton of assets, no LLC. But verify everything with your cpa
6. With 10-20k, investing apartments are out of question unless you invest in syndications or some other crowdfunding deal. I prefer single-families due to exit strategy. Easier to sell SF vs MF. But this answer depends on your goals and preference.
7. Set investment goals. It's easy to get shiny object syndrome and also analysis paralysis.