Hi Toof, That's a good, simple plan.
My only objection to Rebalance is that it can force buying in a component that's not "down" in price. If we have a portfolio of ETFs for Large Value, Small Value, Foreign, REIT and Bonds and all are "up" for the year, but let's say Foreign is up only 10% while the rest are up between 15% and 25% that year. Rebalancing will trim back the ones that are "up" the most - Good Thing. But Rebalancing will also be increasing the ownership in the "worst performner" which is still 10% higher than a year earlier - Bad Thing.
Even so, simple rebalance is still better than what most individual investors do.
Best regards, Tom