I would recommend doing some learning on a couple of fronts before you invest that money and anything other than potentially some bigger pocket glasses (which I am not affiliated with).

Full disclosure they are an affiliate of mine and I am a minority shareholder.

Next you need to find out if that tenant is a regular voucher holder or if they are affiliated with a program.

Try to push-out your closing to February or March.I have a good resource for local title company (no affiliation); they could help you avoid real estate agent commissions if you choose.  

Start a blog or podcast that you can advertise / have affiliate links on.

@Gene LivingstonWhat do you thing of affiliate marketing ?

They are also affiliated with Airbnb.org so it seems to be okay.

Additionally, I would join your local NARPM community as an affiliate.

Please note that we have no affiliation with the companies mentioned.For further details and to explore the exciting project we have acquired, please visit: [link to the project's website]Thank you for your attention and consideration.Sincerely,Chris BlackburnClutch IndustriesSalem, OregonSo, if you have worked with someone (Masterplanner) who likes and understands this type of project.  

It would really depend on how the contract is worded as far as penalties for late completion of tasks, however if the manager you hired (is not affiliated with the contractor) is at fault for the reasons why the project has been delayed than I'd say you need to go after the manager.