No, in my opinion.
The fees are a full 1% more than eSeries.
Manual balancing costs you no fees and very little time (if you do once a year or twice a year).
If you wish to change the allocation % between the 3 funds, you can do it easily and without fees.
Why would you bog yourself down into another "managed" fund and defeat the purpose of passive indexing?
The only time you'll incur fees with eSeries is if you sell your position within 90 days of buying (check exact number of days on their website).