Higher Fees and Costs: Cross collateral loans may come with additional fees, such as appraisal costs for each property involved, which can increase the overall cost of borrowing.In conclusion, while cross collateral loans can provide valuable opportunities for accessing larger amounts of financing and potential cost savings, they also come with considerable risks and complexities that borrowers must carefully consider.

Are there specific considerations, tips, or challenges I should be aware of in these areas?

The app gives immediate scores on what is a good deal and what may need more consideration to make it a good deal.

I have a considerable amount of equity in the house (HCOL area), and after the renovations are complete we are looking to sell the house in order to use the proceeds to kick start the next venture (flipping).  

However, if one property is overseas, there might be additional considerations to factor in.

Their customer service department is very responsive.When selling a service as taking care of everything and handling the complete process, this includes all forms, liabilities and considerations for that particular need.

Another consideration, @Jay Hinrichs, is whether the electrical infrastructure at the property can handle it. 

., whatever) it pops up another offer right on your face (meaning, they keep trying you to whatever cross selling, it is really a simple sales tactic, a psychological trigger to urge you to a decision to buy something). 3) Close the damned pop up, scroll down to the bottom of the page, and check anything on the footer that says "Privacy Notice - Terms of Use - Disclaimer" (It will be active and linked to another page, if it is underscored on hover of your mouse) - I went for the sweet "Terms of Use" - this is either a bought or internet stolen general legal terms twisted a little to fit their business verbiage façade (but you will see many errors of any kind), and here is the thing: legitimate businesses are really verifiable, and provide legitimate links!

While I'm still angry about my family, I'm excited that I can make plans without taking their needs into consideration anymore as I shelved my own life to prioritize their needs.

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.