On the contrary, you would be losing money if you kept that in your bank account or CD only making 2% while your loan is accruing at 3~6%. 

Out of curiosity, how did you get renovation money added into the deal via the realtor?

My curiosity is what are you trying to accomplish my doing this? 

If you're ok having a bunch of debt and it doesn't scare you, then rack it up, but if you think you're going to have trouble sleeping at night because you're afraid of some sort if event that will leave you bankrupt all of the sudden, you should probably keep from accruing a ridiculous amount of debt.IMHO if your monthly cash flow is high enough to net a positive gain every month, consistently, without fear, your doing just fine.

If you come in as an investor or owner and intend to add value to the community and bring a property up to standards, they are are typically very forgiving with the fees that someone else accrued on the property Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

For me, I want to accrue wealth, so spreading my cash across multiple properties gets loan pay down and I increase my wealth courtesy of my tenants.

If it is, property taxes and mortgage interest are added to your itemized deduction and you would then compare it to the standard deduction and take the higher of the two.If you purchase in 2018, your mortgage interest/property taxes will cover the full 365 days and be higher.if you close on the property in Mid-january, your mortgage interest/property tax deductions will be lower as you will only have accrued it for 350 days.There is another thing to factor in is the property/state local tax deduction starting in 2018 is capped at $10,000.

It is far from a done deal... just out of curiosity, what would you think about these numbers on something like a BRRR deal.

If you can consistently show strong work ethic, enthusiasm, curiosity,  humility and perseverance, people will naturally gravitate to you and as a result a mentor will likely fall into your lap.

If by sophisticated you mean achieved net worth or accrued talent in owning successful properties, I think there are varied paths to sophistication.