Yes, that was it. His retirement plan was set and he was only left with a decade at most to retire. Things could be done slowly, since he had time to do them. However, one thing he forgot is plans don't often work perfectly. After all, Reality is often stranger than fiction.
When one plans for the future, it's only fair that they take into account all unforseen variables and see how the plans can be adjusted accordingly. This mode of planning is only common sense, especially since you can't plan for everything, but you can adjust your plan to accommodate anything. And therein lies the difference between true planning and fictitious planning.
And, unfortunately for him, he lies in the latter category, where one can dream but not plan. His retirement plan was solid, that much is certain, but that kind of planning only works if all other variables remain stagnant.