There is a retaining wall that inspector says is going to fall in the next 10-20 years and is held up by long metal tubes that looks like its rusted.

If you have not had an inspector out, I’d advise to let them know to look for anything newly redone that might help you understand what the issue was. 

Perhaps a nice 1950's built bungalow.Always hire a 3rd party property inspector to give you an unbiased feel for the home.

Perhaps a nice 1950's built bungalow.Always hire a 3rd party property inspector to give you an unbiased feel for the home.

Perhaps a nice 1950's built bungalow.Always hire a 3rd party property inspector to give you an unbiased feel for the home.

Being able to do your own comps is good thingOther associatied skills home inspection, radon, mold inspector, haz mat remediation (eg mold), etcAs I hope you can see, some of these topics/skills are necessary for running your investment and the others are for doing your investment.

I would also like to build a "dream team" and, therefore, am looking to connect with contractors, interior designers, mortgage brokers, home inspectors, and attorneys that have experience with real estate investors.Any and all help will be greatly appreciated!

I can’t get any cooperation from the inspector or from the lawyer that handled my closing.

Its common to having something installed, run it, and the inspectors come later. 

To try to help with your question - here are some points I would suggest:Transition time - the transition from previous owner to new owner occurs at closing not before so if you were my client ( I'm a Realtor) I would advise that you do your best to ensure that any disruption caused to the tenants during the transaction period be kept to a minimum - your Realtor can assist with this - request that contractors that need to work on the transaction - inspectors, termite companies, roofers etc. visit at the same time.