They say as I have just seen they will loan money.

Financing OptionsParent Loan Options: Consider home equity loans, investment property mortgages, or co-signing a loan.Tax Implications: Speak with a financial advisor about potential deductions and capital gains.Rental Income Potential: Explore the option of renting out extra rooms to offset costs.5.

So i put in an offer for 10% down conventional loan, $530,000 with 10k back to me for closing costs and it was accepted right away.

I might have a private lender referral that does rural loans in Mid-MO if you're interested. 

So they often will reduce the leverage of the loan (getting 65% instead of 75%) or deny it (which isn't as likely). 

we have to have pre sales my bank will only give me a certain amount of spec loans but unlimited amount of pre sales. its the only way to keep velocity when you have a larger project like us ( 90 homes) We have been blessed no questions about it.. we made some critical decisions when we started that now look like genius moves :)

Based on the numbers seems like it was a straight forward conventional loan...any challenges?

If you have a loan, you may wish to look into due-on-transfer clauses.

Quote from @Timothy Hero: I've brokered over 325 DSCR loans.

Review Anchor Loans, they have closed many investors I've worked with.