I recommend finding a tax strategist who specializes in real estate taxation and tax planning.You may want to consider working with your accountant remotely to expand your options.I would also recommend looking for a accountant willing to work with you throughout the year.

Option C (selling) simplifies finances and provides a large lump sum (~$270K), but triggers significant capital gains taxes, potentially increasing Social Security taxation and Medicare premiums.

Experience with Multi-State Taxation -  Do they have experience handling income from out-of-state properties and navigating California’s specific tax requirements for LLC members?

Here are a few options: max out 401k contributions for you and your spouse, max out HSA contributions, make charitable donations, harvest tax losses, etc.I recommend finding a tax strategist who specializes in real estate taxation, financial planning and tax planning.You may want to consider working with your accountant remotely to expand your options.I would also recommend looking for a accountant willing to work with you throughout the year.

If you don't have a tax accountant, I recommend that you find an accountant that specializes in real estate taxation and business taxation. 

I recommend finding a tax strategist who specializes in real estate taxation, financial planning and tax planning.You may want to consider working with your accountant remotely to expand your options.I would also recommend looking for a accountant willing to work with you throughout the year.

In my opinion, the US and the UAE have agreements to avoid double taxation, so there should not be any additional costs in Dubai.

I recommend finding a tax accountant who specializes in real estate taxation, financial planning and tax planning.You may want to consider working with your accountant remotely to expand your options.I would also recommend looking for a accountant willing to work with you throughout the year.

No, no tax at all up till now. 

You can read more about this tax at www.IRS.gov Pub 598.