I have about 30k cash to put down and looking to do a FHA or conventional loan depending on the property.

A real estate consultant wants to charge about that much money to help other real estate investors close deals by mentoring the investor. 

On top of that, some counties charge an extra percent.

They are concerned about the taxes the IRS charges foreigners on income.

Our attorney explained that although we are profiting a small amount as the contractor, we are also members of the LLC, and will be essentially in charge of running the whole operation and should be compensated accordingly. 

A coworker of mine recently told me to only use conventional loans and not do "anything weird" (he owns a duplex) .

If you have at least a 620 credit score, you can get a conventional loan for 3% down if you're a first time homebuyer and you plan on living in the property.

I only charge 8% to my buyers, but it still provides more than I had before, and it provides a service to my clients.  

If you're doing all of the accounting and recordkeeping for the properties and giving the CPA good Income and Expense records, this level of fee is pretty high, in my opinion.I might charge something like that only if you were handing me a shoebox, 20 bank accounts statements for the year and incredibly messy recordkeeping.

Worth it to get a separate credit card also or just save receipts for related charges on my current credit card?