Personally I wouldn't feel comfortable trying to wholesale a relatives $1M home knowing that I am breaking the law if I cross over into doing anything that can be considered representing them in the transaction, and knowing it will only be marketed to people who buy properties wholesale (typically investors who don't want to pay retail prices), instead of the majority of retail buyers active in the market who are typcially willing to pay more. 

Short term my credit score did take a hit, but once the promotional transfers were paid off, my score jumped higher than it was before.These days, the "pure" zero percent transfers don't seem to be around anymore as they typically charge a 3-5% balance transfer fee as part of the promotion, but this is still better than current HELOC rates.

@Serge Hounkponou Recommend you first figure out the property Class you want to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

The profile of the typical Houston traveler is someone coming in for work.

The typical income from a free and clear rental would probably be $800-1500/month - and on a financed rental probably $300/month on a good day in today’s market.  

There are also 'mezz' lenders (typically for larger transactions) who will cover up to 90% CLTV and require you to bring the remaining equity to the deal, and additionally there is Gap Funding in the form of unsecured personal debt.The latter can potentially be the most expensive option, but allows for true 100% financing as there are no restrictions for how to use these funds, as they are unsecured, and generally obtained through personal credit, income etc (since there is no collateral for obtaining these funds).

Most DSCR loans come with a prepayment penalty that is typically 5% for the first year, 4 points for the second, 3, 2, or 1 pts for each year.

Also, not sure what relationship you have established with your property manager but typically people hire managers to take care of this part and be tenant-facing.  

Although Reunion community does typically cater to a different demographic so it won't be as much of a pitfall. 

You're better off opting for an interest-only mortgage, saving on payments, and then refinancing it into something more conventional when interest rates drop—or, if possible, making a plan to pay down the principal.Interest-only loans, which typically last for the first 5 to 10 years of the loan term, offer two key benefits.