I will list a few options below, but the TLDR version is I may be able to help you with the Dispo side depending on the deal structure and comps.

In terms of cash flow, depending on the market you are interested in.

Most investment property will required 20-30% down payment, depending on the lender.

I work in Construction Project Management and have found that way more people than I think have found an avenue into RE that has been supplemental income and even a hobby for them depending upon which route they took.

It partially depends on what sort of deals you can find. 

Depends on cost/quality.

To calculate your land value, take into consideration the average price per square foot or acre of the comps and apply that to your land.Steps to apply comps to your property:1) Compile multiple comps: Find a real estate agent to help you put together a list of comparable properties.2) Make adjustments: Analyze each comp carefully to determine whether it has advantages or disadvantages when compared to your property and make adjustments to the value upwards or downwards as necessary.3) Determine the use of weighted average vs average: Depending on how close the comps are to your specific property; you may consider utilizing the weighted average method to place a greater weight on those properties that more closely resemble yours.Using comps to value your land can add a component of complexity and subjectivity.

Could vary in size, 1,000-2,000sqft for each small yard. 

You'll find some here that say yes, and others, no....It depends on large your operation is and how well you are insured otherwise.

While these cost a little more, depending on the rental, it can give the feeling of luxury, without costing a lot.