Aloha,Check with your preferred Title company to see if they offer 1031 intermediary services.

Can one change the 1031 Qualified intermediary after the 45 day identification period but before the 180 day closing period?

Make sure you truly understand 1031’s by talking with your intermediary.  

The message that "I" am buying personally not acting as an intermediary/wholesaler or Realtor.

Minimizing Taxes when Building and Selling Houses:Utilize cost segregation studies: These studies can help allocate the costs of construction into different asset categories, such as land improvements and building components, allowing for accelerated depreciation and potential tax savings.Take advantage of available tax credits: Research and identify any applicable tax credits for construction, such as energy-efficient building credits or historic preservation credits, which can help offset taxes.Consider installment sales: Instead of receiving the full payment for the property upfront, you can structure the sale as an installment agreement, spreading the tax liability over the term of the agreement.Utilizing a 1031 Exchange for Commercial Property: To utilize a 1031 exchange for a commercial property constructed on a pad site, you can identify and acquire a like-kind replacement property within the specified timeframe to defer taxes.It's important to meet the strict requirements of a 1031 exchange, such as properly identifying replacement properties and completing the exchange within the specified timelines.Creating a contract for sale after renting the property for a year may not satisfy the "held for investment" requirement of a 1031 exchange, so it's advisable to consult with a tax professional or qualified intermediary to ensure compliance.Converting Raw Land into Individual Lots:There is no specific requirement to hold lots for a minimum of one year in order to qualify for a 1031 exchange.

Ask your 1031 intermediary a lot of questions so nothing is left to interpret because I've found they don't always disclose everything upfront.The good thing is that you're willing to invest out of state. 

Did you use a 1031 intermediary as part of the sale?

They let intermediaries like realtors or wholesalers prevent them from truly understanding the seller’s motives, which results in an imperfect understanding of the whole situation.

I disposed of a 4 unit building original purchase price was $262,000 Sales price $502,000.00 total proceeds to 1031 intermediary was $240k.

Also, you mentioned not being sure who could help with 1031 questions... a Qualified Intermediary for 1031 exchanges, like myself, would be your best resource.