If you can be flexible on timing - put off the home purchase for a couple years if there happens to be a crash right at your target date, then a lot of volatility concerns fade. Of course, the middle of a crash is also when home prices will be lowest.

Vanguard's actual asset allocation on their TDFs is https://retirementplans.vanguard.com/VGApp/pe/pubeducation/investing/LTgoals/TargetRetirementFunds.jsf and there's a simple asset allocation - return calculator https://smartasset.com/investing/asset-allocation-calculator There's a bunch of them around, that was just the first one with error bars that came up for me, but it will give you a better sense of both how much and how variable the full equity vs the ~60/40 TDF will be. I like error bars. To my eye, it looks like there's not much difference in the 5-year median or 25th percentile performance, but a notable upside potential in the 75th percentile. That's why I say, if you're comfortable with the volatility, you might as well go all the way.