So this took an unexpected turn. After bringing MVP up to 80% of a working prototype, my reading endeavors forced me on a halt.
I stumbled upon Steve Blank's 'Four steps to epiphany and it's been an epiphany! I felt I had to devour everything before I took a step further! It was that good, that I took up the sequel 'The Startup Owner's Manual' and it feels like gold.
I plan to use the suggested flow as a wireframe on building MrBill, as a testing ground to validate some of the ideas in this book.
Let's see where this leads to!