What can we do next?!

[Kirk Catt]

Ok, So in the last year we've bought 5 LTRs and 1 STR. We are at a point with enough cash flow that if one or two properties go vacant, the others can cover it. We're at a point where we don't know what to do next. I know there are a hundred ways to make money in RE. So far, we've done the 20% down, conventional loans. But how do we start scaling up when we can't keep going with these type of loans. Yes, i'm rambling, which shows how much direction i need. Where do we turn now? Which books, research, strategies should we be learning? Pretty broad questions i know. Basically, How do i move into doing this full time?