I am a lender and happy to answer any questions you may have! 

I have however run into issues like transfers being rejected by Baseline (from one of my own accounts in a traditional bank) when all the information is correct.

I have found a lender who will do a portfolio loan, partial release and no pre-payment penalty for both properties.

Would like to talk about lenders specifically. 

A GC wants to partner with me in a JV deal where he upfronts the entire rehab funds as both GC and a private money lender.

You'll have higher out of pocket costs for inspections and appraisal on 5+ units, LTV typically doesn't go as high, many lenders require a 70%+ occupancy rate.

how many lenders have you called?

Thanks, that's what the lender I primarily use is saying. 

He's an agent primarily working with investors and I am a lender specializing in working with investors + we buy deals of our own. 

Speaking from private/hard money terms, the loan would most likely be considered a delayed purchase if less than ~5 months depending on the lender, and no financing was used on the original purchase.