Hi Potvin,
Sorry for your loss!
If this is something that is causing you some stress/discomfort in your life I can't see any reason to go away from a simple three fund portfolio.
You have some really good, low cost ETFs in your portfolio already and any future savings on fees/tax-efficiency would be minimal (although it could add up depending on the size of your portfolio).
Simplicity is almost always better, and your peace of mind is worth a lot :)
If you're happy with where you are at there is really no point in tinkering.
I follow this approach when helping my family with their portfolios. They could squeeze a few more dollars by adding complexity but for them it's simpler and less scary to have as few funds as possible.