Get some contractors, on this custom work, at least 10 generals, or 5 per trade.

For the last 2-3 years I was heavily involved in building my wealth by day trading and traditional equity investing.

First, many buyers are trade up buyers and already have a lot of equity in existing properties.

Here is how the IRS defines self-employment: Generally, you are self-employed if any of the following apply to you.You carry on a trade or business as a sole proprietor or an independent contractor.You are a member of a partnership that carries on a trade or business.You are otherwise in business for yourself (including a part-time business)See following link for more on this: http://www.irs.gov/Businesses/Small-Businesses-&-S...If or when you do qualify for a self-directed solo 401k, the quick answer is yes a SDIRA LLC can be transferred to a self-directed solo 401k.

The requirement is you must be selling real estate that you purchased with the intent to hold for productive use in business, trade, or for investment and are going to purchase real estate that it is also your intent to hold for productive use....Intent rather than holding period is the true standard.  

I may be wrong on the best trade but plumbing would be my choice, if I had to choose.

I know it's repeated often but you have time and I'm sure a talent that an experienced investor needs and would be willing to trade for teaching you the ropes.  

This lady was jack of all trades and master of none and running herself into the ground.There are only 24hrs in a day.

Are you a contractor by trade? 

After that, using it to start the BRRR so you can repeatedly grow your portfolio without having to save up a new amount of $40k each time you want to make a purchase, but that works better for SFH, which has a trade off because multi's generally cashflow better and appreciate pretty well.