Best for good cheap players without WP:
Norway/Denmark/Ukraine/Belgium/Croatia
Good other leagues to load for future of the game:
Brazil/Argie/Portugal/Spain/England/France/Germany/Holland
I did lol
Russia are very good, especially when playing in the top divisions as you can get big money from them..
Bulgaria are not a good idea at the start, you can add them in later
Greece are also very good, forgot to add that (well not really as he can only run 10-12 at most, so I had to)
USA seem to produce weak regens in my saves so far, with and without the nation loaded..
maybe load them up later as well as you will not be able to sign anyone that good in your first season due to WP