Should I just stick to VDHG and forget about it?

Recently started buying ETFs as a 26y/o, and felt like VDHG would be a better option given the 10% bonds in times of downturn, but VDAL and DHHF both have 100% equities. I currently have $700+$200/fortnight, and running the numbers at the same rate of contribution, in 30 years the difference in the value among these three doesn’t look all that different. So, should I just stay with VDHG or buy either VDAL or DHHF? Or stop investing in VDHG and just focus on full the growth ones?