Looks like you have multiple options due to availability of funds/income.
Current a 6 months soft power course cooking or Muay Thai should work
Remote work could be tricky as you are not working remotely for a company or yourself and not sure if you could frame the management of your 2 investment properties as remote work.
Would require a good cover letter explaining the situation
I used a step by step guide with cover letter and employment templates checklists document assembly etc
I used a step by step guide that had all the letter templates and checklists of what documents to submit and how to bundle them
If you own the business you can write yourself a letter that you work for the company and what your role is. I did this in Australia and got approved in 4 days
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