Well, that's what I'm trying to do. How much success I have, who knows. I've given myself the next 20 years, and a monthly budget.
Started with an inherited
70% filled Scott up to 1959, and moving it out area by area onto quite modified Steiner pages in Vario binders (with some Palo/Lighthouse thrown in). Started with French colonies and Balkans where the collection was quite strong to start. My goal is to get 90%+ completion for each country, and as I run into the expensive ones, move onto the next area, and backfill gaps/upgrade as budget/interest presents. I'm a generalist and very interested in dead countries, so that suits me better than specializing.
Plus a Canada complete to 1999, but that's just a bit of patriotism :)