Any legal issues I should be aware of in this situation? 

It might cause me financial harm as I have to sell more stocks and might pay short term capital gains vs long term capital gains.

Quote from @Sarah Ali: The seller has a contract with the agent, which means they can't legally sell the property without compensating the agent.

You will want to consult with a lawyer.In regards to your last two questions here's some background on what makes a contract valid and enforceable:Offer: A promise to do or not do something within a certain time period Acceptance: A clear and direct statement that all terms and responsibilities are accepted Consideration: A legal and adequate inducement given in exchange for the promise Capacity: The parties to the contract must have the legal capacity and competency to contract Awareness: A party must be aware of the contract Legality: The contract must be legal in the jurisdiction it will be operating in***Not legal advice*** Steps I would take: -Review contract in detail to understand each counterparties responsibilities (if you are not aware)- Email a copy of the lease to each of the tenants listed on the lease and reiterate lease expectations for termination notice, rent payment etc. - If the lease was signed via Docusign (other esign may have same ability) - you can go to the envelope, go to history and view the IP addresses for each action taken.

With an SDIRA, you can use tax-advantaged funds to purchase property, and any income or gains from the investment grow tax-deferred (or tax-free with a Roth SDIRA).

While there's no strict requirement to match the original mortgage terms, reinvesting the full proceeds without financing or using leverage to enhance returns is key.If you don't reinvest the full amount, any shortfall ("boot") will be subject to capital gains tax, and depreciation recapture may apply.This post does not create a CPA-Client relationship.

The buyer pays taxes on the crypto gain and the seller pays taxes on the property value gain.

Because I'm not an accountant or versed in tax code and law wouldn't I want a CPA to ensure everything is legally tight and as advantageous as it can be? 

Recently, our real estate agent did a market analysis and estimates we can sell for between $575K-$585K, resulting in a net gain after all of our fees of about $100K.

What happens during periods when the demand for legal work is lower?