I suspect that most or all serious investors on BP have read a majority of these.

Don't pierce the corporate Veil: This can occur if the entity either is poorly capitalized.Inadequate Initial funding of the entityor fails to maintain a separate identity from its owners ( using the business bank account for business purchases, maintaining separate books) Conversion of entities Assets for Personal Benefit:Another factor that poses a risk of piercing the corporate veil is the draining of entities assets (such as payments of large salaries to shareholder-employees) that leaves the entity with inadequate resources to pay its debts.Also, you should get a good Insurance.

(How that's going to affect everyone's taxes is another question for another professional... especially in the Brave New World that just passed Congress. )  Otherwise, you've got $170K in a mattress or tied up in some investment that you can use, or you've got enough clout that some or all of that money can be lent to you as an unsecured loan... 

I wouldn't say anything is holding me back, but I will say inadequate funds make the road a little longer.

Have you considered renting out part or all of your house? 

:D  Sometimes I have more success with going to Google and doing searches like "rehab budget site:biggerpockets.com"; Google has indexed most of the posts here, and searches like that use Google's keyword handling - you can search for exact phrases using quotes, avoid "or" searches, etc.I think the "advanced" search here on BP gives you more options - you can search a particular forum, or all posts from a particular author, or posts before or after a certain date, etc.

I have enough cash to buy a second which is where I'd like to start learning the BRRRR strategy so I can get back some (or all) of that cash for the 3rd property and so on. 

Start off with Google, but it may be worthwhile speaking with any or all of the following people:Financial planner - if appropriate, may be able to help plan on your short-term and long-term goalsGeneral contractor - will be able to provide an estimate of costs associated with rehab of your current propertyAccountant - may provide tax consequences for either rehab or 1031 exchange1031 exchange company - will detail the process of correctly performing a 1031 exchangeReal estate broker - will help you sell your current property and locate an appropriate replacementThat said, depending on the location and details of your property, it may be a good time to sell.

Hi @Michael KaySome options for a property of that size could be:Seller financing with little money downObtain bank financing and ask the seller to carry part (or all) of the second (down payment)If it is a really good deal and you can actualize the upside potential really quickly you could go with a hard money loanIn a similar vein to the hard money loan, you could partner with another individual for the downpayment.Those are just a couple of ideas to get you started! 

Remember also if you are getting the properties at good prices you are getting a big chunk or all your investment back when you refinance.