Looking for new financing source..

I run a real estate company in OH/WV. We have 4 years experience in investment and 15 years construction experience and currently have 15 properties (35 units). We’ve hit the ceiling at our local bank at 1.2 million and would like to find a mortgage broker.

Our credit history with our bank is perfect but some old tax liens, judgements and medical bills have dragged my score down around 575. Is it possible to find 65% LTV loans that will roll-in all the upfront costs? I know there are high closing costs and interest rates but our market is full of run-down properties and a growing university in need of more student housing.

Also, is it possible to get 30-40% LTV loans for the down payment and a little cash-out if the seller is willing to take a second position for the balance?