New real estate investors and random questions

[Da'Michael Horne]

We are new investors looking targeting 3 long term rental properties this year. We currently have one LLC but are going to potentially apply for two more once we get up and running. We have about 60k capital that we are willing to start investing with.

The LLC structure the first would be acquisition, second would be a holding company and the third would be the property management company.
Question- thoughts on how many LLCs are needed? when we should look to open up the other LLCs? Do we actually need the other LLCs? 

Method of financing we have looked into RNC capital and LendingOne for lenders that deal strictly with LLCs. We are target properties they provide a ROI of at least 15% and primarily looking into smaller single family homes to start.
Question-Is 15% a good target? For new Investors what are the best methods to finance? Thoughts on Heloc, crowd sourcing, or personal capital to finance the first few set of homes.