You could do half for you and half for the 529. I wouldn't solely do the 529, you never know what the future holds.
Personal Finance
Learn about budgeting, saving, getting out of debt, credit, investing, and retirement planning. Join our community, read the PF Wiki, and get on top of your finances!
Note: This community is not region centric, so if you are posting anything specific to a certain region, kindly specify that in the title (something like [USA], [EU], [AUS] etc.)
If your goal is the save for education a 529 is a good choice for tax free growth.
Your returns are based on your investment strategy, but the earnings would be tax free. Assuming modest growth of 4% per year what you put in today would be worth 22% more in five years.
Should you be saving solely for your sibling’s education depends on your personal financial strategy. There are plenty of guides online on how to prioritize your dollars. I like money guys financial order of operations.