My oldest son took that approach for a couple years as an engineering major. Another strategy was to take the harder major courses in the Fall or take an additional class over winter session.
When I was a college athlete many moons ago, I preferred the winter sessions classes because I'd rather stay at college (in RI) than go to my parents new house in Ohio where I knew I'd be bored stiff. Also a winter session gave me the opportunity to focus on one class for three weeks that I might not ordinarily take with a full or almost full course load.
I think you are on the right track with this approach.
Good luck!