Couple questions from BRRRR book

[Christopher Davis]

To illustrate the BRRRR method, the author presents two scenarios on p37. For "Mike" the BRRRR investor, I have two questions.

1) On p43 he refinances his first home to and gets out a net of 77.5k. It’s 84k - 5k closing costs. He reinvests that into a new distressed home.

Q: 77.5k is not the same as 84k, so assuming every house he buys is 84k, doesn’t he have to top that up with 5k each time? So that is added cash he has to save and contribute. Am I correct?

2) On p45 after 15 years he owns 84 homes. The author readily admits that not everyone wants to own 84 homes, it's just to demonstrate the solid compounding benefits of BRRRR.

Q: What would be a more realistic strategy to achieve the same net worth without buying 84 homes? At what year could he consolidate and buy a hotel Monopoly style? What be a realistic alternative strategy here?

Thank you for any help in understanding all this!