The longest delay is the floor plans. 

However, the tax treatment differs between short-term and long-term rentals:Short-Term Rentals (STRs): If you materially participate (work 100+ hours and more than anyone else on the property), you may be able to offset rental deductions against W-2 or other active income, offering greater tax benefits.Long-Term Rentals (LTRs): If your AGI exceeds $100K, your rental losses may be limited, unless you qualify as a Real Estate Professional (REPS).If you plan to expand your rental portfolio, consider an LLC later for liability protection and easier management.

What type of property do you plan to purchase(Single, multi, commercial, etc) and where do you plan to buy it?

Make sure your wife agrees with this plan, though.

We closed on our first property on November 15 and plan to employ the fix-and-flip strategy. 

Plan is to purchase a couple homes over the next year.

If you're wanting to get into construction managment there's two main areas you would need to make yourself an expert in; Reading plans & Scheduling.

With online access to almost every jurisdictions property recordings, lenders today use software that automatically searches property transfers for transfers involving their loans.  

A friend of mine from abroad plans to buy a property in CO or FL with a budget of $10 million, but she plans to use Bitcoin to pay for the house.

Run the comps, calculate repair costs, and plan multiple exit strategies so you maximize every deal—whether that’s wholesaling, flipping, or holding for cash flow.