This is based on (FIFA points for a win) / (actual effort from Elo rating).
I took into account only teams that would bring at least 200 points for a win.
This is the top 20 best teams to play against.
Iceland, Wales, Romania, Scotland, Hungary, Slovenia, Switzerland, Greece and Montenegro only have one match scheduled.
Sierra Leone (Côte d'Ivoire away, Congo DR at a neutral venue)
Armenia (Latvia away, Denmark away)
Iceland (home vs. Turkey)
Wales (away vs. Andorra)
Romania (away vs. Greece)
Venezuela (away vs. Korea Republic, away vs. Japan)
Scotland (away vs. Germany)
Hungary (home vs. Northern Ireland)
Slovenia (away vs. Estonia)
Switzerland (home vs. England)
Croatia (home vs. Cyprus, home vs. Malta)
Greece (home vs. Romania)
Bosnia-Herzegovina (home vs. Liechtenstein, home vs. Cyprus)
Tunisia (home vs. Botswana, away vs. Egypt)
Uruguay (away vs. Japan, away vs. Korea Republic)
Montenegro (home vs. Moldova)
Denmark (home vs. Turkey, home vs. Armenia)
Algeria (away vs. Ethiopia, home vs. Mali)
Belgium (home vs. Australia, away vs. Israel)
Slovakia (home vs. Malta, away vs. Ukraine)