Applying 11.5.10 Pre-Upgrade Patches Far in Advance

Good Afternoon,

 While running upgrade cycles going from 11.5.10 to 12.1.3, we've decided we would like to apply the pre-upgrade 11.5.10 patches to production now, so they're already there when we move forward with future upgrade cycles and the actual production upgrade.  This will save us time on test cycles, and shorten our downtime window by an hour or two.

Has anybody else done this?  Any thoughts on the viability of running production with these patches for ~6 months prior to the actual upgrade?

The list of patches we've identified for 11.5.10 are:

4685497

5259121

4684603

8845395

9685457

5233248

9889680

6980384

8904721

8910899

10231107

5760729

Thanks!

Rob