I don't have as much info as the lender that pre-approved you, but based on the info you've provided and assuming you have decent credit, there's a good chance you can get that rate closer to 6%.

As you read these books, watch the BiggerPockets podcasts.

A careful present value of the two strategies would need to be made based upon a specific investor's circumstances, goals and objectives to determine which would be best for them.  

An alternative I’ve heard advertised on the rental income podcast is the guarantors…https://www.theguarantors.com/I only suggest them as I’ve heard them advertise where landlords are and haven’t heard of Rhino. 

I am a buy and hold investor in Florida looking for an asset based lender to refinance a Condo .

Never a bad idea to look at the comps - this should help give you some direction based on your specific market.

If I get multiple apps I will start with the ones that appear to be the best qualified on paper (based on income, length of lease desired, past rental and employment history) and I'll run those first.  

Listen to the BiggerPockets Real Estate Rookie podcast.

Martin writes about measuring your current cash flow based on your current equity. 

So is your half of the profit based on you finding the deals, and negotiating the deals?