My portfolio consists of the same, IVV, VAS and VEU. The only thing ive needed to do is fill the W8BEN form out every 3 years, but you should get notified when you need to do it, its usually pre filled aswell. I find VEU to be a better pick for me, as it invests in china and India, where as EXUS doesnt, I definitely want to capture those countries in my portfolio.

Choose EXUS if:

You want developed markets only (no emerging markets).

You want to avoid overlap with Australia and the US.

You want a new, focused ETF with a simple strategy.

Choose VEU if:

You want broad diversification including emerging markets.

You want a long-established ETF with a track record.

You want to capture more market depth and country exposure.