For you to ask this, you're valuing that "16% CoC" so highly it's likely overriding the real material aspect of the investment.

This will usually lead you directly to low barrier stagnant markets where the cash flow represented in your spreadsheet does not transfer to reality and the most of the equity is "paper equity" because you will never see it materialize yet many look at completing the BRRRR as the ultimate success.I recognize I am using some assumptions but let's assume you have $100k to invest and purchase and renovate a home in MARKET A for $400K but once renovated the home is worth $500K.

Leather is a living material and it will dry out and crack if not maintained.Microfiber is a good choice like @John Underwood said.

Slowly build out a repeatable process...if you continue to change things (as in different types of properties, different levels of renovation, different finish material, different neighborhoods, etc.) you create more variables and make it harder to solve to the problem.I am a math guy and less unknowns/variables you have the easier the problem will be to solve. 

One lesson learned: Create a good relationship with contractor and shop around for the best pricing on materials.

The policy consideration behind the higher leveraged loans is to provide financing for individuals who have high earning potential and are at the start of their career where the earning potential has not yet materialized and perhaps are dealing with the added burden of student loans.

You may think it helps you retain tenants and prevents costly turnovers, but you are wrong.

Beyond that, you need to become an expert on labor and material rates in your area or get connected with someone else that is. 

The roofer gave me a invoice with high level bill of material, and a statement that it has 2 years of warranty and brand name of the shingles.It does not say brand name warranty or model or batch number etc. 

Issues we faced were conflicting opinions on the next home we should purchase for our portfolio and what upgrades to do when we were doing a flip, the cost of labor and materials, etc.