Opening Business Credit Cards During Pre-Approval Process (BRRRR)

[Julian Pilate-Hutcherson]

I am in the process of setting up initial purchase and refinancing lending for BRRRR deals in a new, low priced market (avg. purchase price of around $60,000). I plan on opening balance transfer business credit cards and 0% intro interest credit cards to fund my purchase and rehabs. At the same time, I want to get pre-approved for refinancing before even searching for properties.

I know when applying for a mortgage, opening LOC and receiving hard inquiries during the process may mess up the process and effect how much I can get approved for. However, since I assume I would only need to get approved for at most $150,000 (75% of max assumed ARV of $200k) and I know for certain that I can get approved for at least $300,000, would it even matter if I opened these LOC before, during, or after the pre-approval process?