Great post.
My portfolio:
I own around 160+ domains. Few .Com and most of one word or two word exact match/keyword premium .Co names.
Before Acquiring names:
I gather as much data as I can about the possible domain names in Microsoft Excel. I look after past sales, comparison sales for that specific keyword and industry niche. Godaddy and Epik Appraisal. I primarily use NameBio.
After Acquisition:
1. I add that name in my portfolio excel. Columns are, Domain name, invoice number, date of purchase, date of expiry, Registered email, Registrar, BIN price, Sales amount, profit % Etc
2. I list my name on Godaddy Auctions. Then I add them in Afternic (via sync from the same Godaddy account)
3. Then I change nameservers and put up a lander using DAN with BIN.
4. Then I register names on Epik platform.
After Sales:
A. I makes the sales entry in excel, I calculate profits and add notes about the sales experience, time and commission fees
B. I immediately remove listings from other platform
Hope this information helps you. I have been learning a lot from fellow domain investors on this platform. Hope you find my information resourceful.
With kind regards.