SMSF vs DIO

Hi

I’ve been relentlessly working through all the guidance available on passive investing and have been considering of setting up an SMSF seriously now. I plan to keep things simple and only invest in index e.g. BGBL/GGBL/AVSV/VAE. While people say index investing is not good for SMSF but based on my calc:

1. At $300k, the cost is starting to breakeven (between e.g. stake SMSF and choiceplus/member direct).
2. In SMSF you can invest in every dollar, whereas in DIO there are restrictions.
3. SMSF can use betashare direct to invest more frequently without fees, whereas DIO you either pay the fees or reduce frequency.
4. Investment menu is limited in DIO (e.g. no GGBL to amplify risk/return, no AVSV or any global small cap options).

Am I understanding this correctly? I’m aware of legal obligations and compliance burden of being a trustee etc.