Lastly, does anyone have any guidance on what to present in an LOI for DD periods/ approval period and extensions.

Maybe you can include a clause that if closing does not happen within a given time period that you will increase your EMD or the total price they get. 

Learning about the 6 month and 12 month "seasoning" periods really threw are wrench into our plans.

Each period during which a customer has a continuous or recurring right to use an item of property held in connection with the activity (without regard to whether the customer uses the property for the entire period or whether the right to use the property is pursuant to a single agreement or to renewals thereof) is treated...

If you are correct about the 1 year warranty, you might not have a legal claim - unless you brought the grading issue to the builder's attention prior to the 1 year period.

:)I am looking for any tips on how to go about getting the green light on getting funded for my first of many fix & flips, I started a LLC a few months back and my credit score is pretty low as I’ve broke both my legs over a period of time.

It's a strict 2-year requirement.As for strategies to avoid capital gains on the sale, if your client doesn't meet the ownership and use requirements for the Section 121 exclusion, they might explore other options such as:1031 Exchange: If the property is an investment property rather than a primary residence, your client could consider a 1031 exchange to defer capital gains tax by reinvesting the proceeds into another investment property.Installment Sale: If your client is willing to accept payments over time, they could consider structuring the sale as an installment sale, spreading the recognition of the gain over multiple tax years.Charitable Remainder Trust: If your client is charitably inclined, they could contribute the property to a charitable remainder trust, receive income from the trust for a certain period, and then have the remaining trust assets pass to charity upon their death, potentially reducing or eliminating capital gains tax.These are just a few options, and your client's specific financial situation and goals would need to be considered in determining the best approach.

I know it’s a pain, but periodic property checks can help mitigate this kinda thing.  

One could take the property list to be auctioned, and skip trace those addresses, and direct mail during the 1 yr period before end of redemption period. 

If you want to name more than three properties (like your situation where you want to sell a larger asset and buy multiple smaller properties) then either     a. the total value of the list cannot be more than 200% of the value of what you soldor     b. you purchase at least 95% of the value of the list.The best thing you can do if you can grab enough runway in the due diligence period of your sale, would be to immediately get under contract for the properties you want even before you close the sale of your old property.