The Blues brought in Anzhi Makhachkala duo Willian and Samuel Eto'o as well as Marco van Ginkel and Andre Schurrle ahead of the transfer window deadline, but also allowed Romelu Lukaku to join Everton on loan.
Mourinho feels such strength in depth will serve Chelsea well when they look to continue their promising start to the new season after the international break.
Speaking to Chelsea TV, he said: "We have that (balance in the squad). We have two players per position, with three strikers and an extra midfield player.
"Every position is covered and we are very happy with what we have."
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