You can buy any program out there, but if you're not willing to put in the work for an extended period of time, it's not gonna work

Personally I would never go past inspection period without stepping foot in the property.

(This requirement may be waived under certain special circumstances constituting good cause for a waiver, such as the loan being issued because of a bona fide emergency, with the lender obtaining written consent from the buyer to proceed with the loan without the disclosure notice.)The closing on a home equity loan must occur at a permanent office of the lender, at a title company, or at the offices of a lawyer.After the closing occurs, the borrower has a three day period during which the borrower may cancel the loan without having to pay any charge or penalty.

I own 2 of the units for STR that I kept empty last service period just to get a gauge on things and the 4 other units still managed to use a combined 43,000 gallons which makes a $860 bill total that is split between Louisville Water@$321 and Sewer@$539.

I am not a licensed GC but I have experience building spec homes that I could show a bank Fine paying a higher interest rate on the construction period of the loan, but would like to be more in line with traditional mortgages rates on the perm portion (although fine paying slightly higher if I avoid closing costs for a second loan)Do y’all have any recommendations on specific types of loans for this or specific banks I should talk to?

HELOC money is expensive money... so i think you need to take another look at the expenses and make sure you're including all of them - not just PITI.and you may know this, but i'll remind you - HELOC payments are usually interest only for the first few years during the draw period. 

There are specific rules for 1031 exchanges including:The replacement property must be identified within 45 days of transferring the relinquished property.The replacement property must be received within 180 days after the transfer of the relinquished property or the due date of the taxpayer's tax return, whichever is earlier.Special rules apply for exchanges between related parties (defined in § 267(b) or 707(b)(1)).Real property located in the United States and real property located outside the United States are not considered property of like kind.Cost Segregation StudiesA Cost Segregation study is an IRS approved federal income tax tool that increases near term cash flow by utilizing shorter recovery periods for depreciation to accelerate return on investment.

I would say compare terms, seasoning period requirements (Assuming when you mentioned construction loan you're talking about a rehab project), response time of your rep, learn as much about their loan underwriting and approval process as you can.

Your overall return on a 10-20 hold period will show the merits of this approach.

There is no statutory holding period before you convert an investment property to your primary residence.