some off the cuff ideas (some may require getting employees or establishing a building)open a shooting rangepaintball fieldlivestock rangecampgroundrv parkingprivate wilderness toursfarmlanddrive in movie theatredig a hole and stock a fish pond

Laws very by state but in Missouri you can assign responsibility for all claims and damages to the tenant and require the tenant to hold harmless and indemnify you for everything except damage resulting from the sole gross negligence of you as a property manager.  

There are several areas where you can pick up move-in ready SFH's in the $120-$140k range that will generate $1k-1100 in gross rent.

Whenever you pay a GC, make sure you get a partial lien release signed by the GC, the subcontractor and every employee in the job.

My investing goals are tied directly to gross monthly cash-flow to build my portfolio and gross income overtime.

Your cash flow might be something like this(and i'm sure i'm forgetting stuff):monthly gross rents - mortgage payment- vacancy(1/12 of gross rent) - repair fund(10% of gross rents)- capital expense fund(10% of gross rents)- taxes(1/12 tax bill)- insurance (1/12 insurance bill)- marketing fees (1/12 annual costs for marketing)- management fees (1/12 annual cost for management EVEN if you manage yourself otherwise you're buying a job)I'm not saying don't do it, but you need to know what you're getting into.  

Each room is collecting just around $2,815 per month (no way you can get that much for 1 room in a 6 bedroom if renting regularly) with a Gross Schedule Income of around $200k and a Annual NOI of $98,500.

I am full time W2 employee and I haven't done any business (profit or less) in that LLC so far i.e. no schedule C so far.

Today it is worth about double, brings in gross rents over 14K, and I have no debt on it.

they want to make sure that you're monthly debt including your new mortgage does not exceed roughly 42% of your Gross monthly income.