If you know where you want to go that is your vision and yours alone. 

I agree it really depends on your personal situation, expectations and vision.

You need someone who allows you the freedom to follow through on your own vision, but can also keep you disciplined, on schedule, and under budget (as much as possible).

Sometimes a deal makes money but is not the best deal for you as a company as it will take you offer you vision.

Do I: 1) list the renovation projects separately, and find contractors to bid on them one at a time (with a vision I've created from researching other rehabbed houses in the area)?

As long as everyone does what they need to do to keep the business forward it can work for a collective vision. 5a) Don't know5b) The MLS only for now (yes it can be done) and that is where I recommend people start because the other methods can involve some capital and I like free to start with.5c) You can always to a title agent.

Recently, I partnered up with a MD contractor with a similar vision to mine.  

In addition to GC being able to procure and complete the remodeling work, there has to be a good match in terms of GC's understanding your vision for the project, the flow of the design, the quality of finishes you are going for.

Working on efficiency and the vision of the company is key to any business.

I keep discussing this vision of mine with realtors who immediately ask me which area's i'm most interested in.