LLC's and all cash purchases

[Scott Ball]

I'm an overseas investor, but a US citizen. I will be talking to a CPA next week, but want to make sure I have a general understanding of what to ask. 

In theory, let's say I have $1 million cash for 5 properties, each on the market for around $190K (10K for settlement, etc). I can't get any loans since I don't live in the US, and I want to own in an LLC. From a wealth protection standpoint, do I need to set up a new LLC for each new purchase? (Once I move there I can refinance for future purchases I am assuming?) Is there a better way for wealth protection and also leverage? Thanks