I forgot to include this in the Google forum I filled, so I wanted to come back and comment on this. Are you going to help EAs with student loan debt on their payments? I know that many people, including myself, have a few hundred dollars a month that we have to pay, and being without income for a long period of time could make this a non-option for them. Alternatives like deferments could potentially be used, but it's an area that should be explored at least.
So this isn't a full answer to your question, but one thing you should factor in when making your decision is how much time/energy do you have? Stocks and bonds are pretty great for that because they're passive income earners. If you already have a full-time job, then renovating property might be a huge time sink unless you're willing to shell out the cash for hiring someone to do it. Some of this also depends on what skills you have. If you're a programmer, doing some side projects/contract work might make you some decent cash. If you can turn a hobby that you would already do anyways into a profitable venture, that can save you on the time/energy cost.