However, I've recently come across articles discussing the potential benefits of lower down payments in certain situations.Given the current real estate market conditions, what are the critical factors to consider when deciding between a high or low down payment for an investment property?

The only reason that you are requested to order a comparable rent schedule appraisal is because the lender needs to see what the market rent is for that specific investment property.

If you want to network or ask specific questions about your local market, go to your local real estate forum and connect with investors from your area: https://www.biggerpockets.com/forums/86-local-real-estate-networking5.

After repairing and improving the usability of the home, I was able to get it rented out at the top of market.

Looking into Scottsdale market for Airbnb investment.

You're offering to increase marketing and add an experienced assistant to help guests.

How is the West Palm Market.

You won't be scaring away the seller, this is a completely normal thing to request and your broker should be the one prodding the seller's side for this info up front (especially if the seller's side hasn't provided it already with the marketing material at the very least). 

Purchase price: $1,000 Cash invested: $1,000 Sale price: $4,500 Wrote letter to off market property land owners.

If you want to network or ask specific questions about your local market, go to your local real estate forum and connect with investors from your area: https://www.biggerpockets.com/forums/86-local-real-estate-networking5.