Saying something is so does not make it so. Lets go over it one more time,
In verse 3, who are the "us" that have been blessed? The saints, those who have been set apart in Christ. Thus they have been individually elected and placed within the corporately elected body of Christ.
So Paul is inumerating some of the blessing of being "in Christ" to those who are "in Christ."
Ephesians 1:4 (NASB) "just as He chose us in Him before the foundation of the world, that we should be holy and blameless before Him."
The "us" is plural, referring to a group. And then it says "in Him". What does this mean.
Some Calvinists argue this means individuals were chosen and spiritually placed in Him. But another way to look at it is God chose Him (the Word to be His Redeemer) and when He did He corporately chose those that the redeemer would redeem, not individually but corporately as the target group of His redemption plan.
Bottom line, those of us in Christ have received a blessing of being chosen corporately before the foundation of the world. Now flip over to 2 Timothy 1:9, which says, "who has saved us and called us with a Holy Calling, not according to our works, but according to His own purpose and grace [think redemption plan] which was granted us in Christ Jesus from all eternity.
Both verses support the corporate election view and allow a straightforward understanding of many verses which say God chose us during our lifetime, such as 2 Thessalonians 2:13, James 2:5, 1 Peter 2:9-10, and 1 Corinthians 1:26-30.