As everyone said, 20% is fair for a manager to take care of a STR.

Personally, If I could pull out a HELOC, I would use it to fix and flip which will typically make sense as you shouldnt be keeping the money out for that long and you can recycle it or pay it back and build off the capital that you got from. the flip.

Quote from @Willam Mendez: Hey guys, just wondering if anyone knows of any HYSA that are used for Business or any other Business account that will give me a high Yield? 

I'm a dry sponge trying to soak up all the knowledge.

Everyone has a timeline of when interest rates are going to change.

A manager will roughly cost $100-$150 a month to take over a unit (it could be more or less in your market) and manage the units.

My understanding is an E2 Visa is an investor Visa (ie. you need to buy a business) OR you can piggyback off an existing E2 holder. 

This is a story from my past that provides a perfect example as to why investing in tax liens at auction is so dangerous for any but the most experienced and knowledgable investors20 years ago I purchased a SFR as a long term rental investment that sat on a double lot.  

Would a HELOC or home equity loan on my personal home be a good idea to fund this?  

A HELOC is a short term debt instrument.