I suggest reading material on both to see what you think you would like better, then you would know immediately what will work for you.

You find a decrepit house for 20K, put 20K worth of work and materials in it and sell it for 70K, make a 30K profit.

I keep asking the question, but nothing has materialized on the surface. 

The purchase of a license (read all material from the governing body in your area.

Is it mainly material and you could do the work yourself?

My lender says he gets the delayed financing concept but doesn’t want to do this way given there is a lot of more materials required ( all the renovation activity receipts etc.).

I will be providing all materials, e.g. underlayment, shingles, nails, etc., the dumpster and pulling the permit. 

Also beware that building materials prices in the NW are very high right now.

There are many risks with BRRRR, so I'll list a few that are within your sphere of control: cost overruns due to faulty estimates, firing incompetent contractors, incomplete knowledge of market conditions, "hidden" problems not covered by contingency funds, delays in acquiring materials. 

I don't have a rigid materials list and a set 'look'.