ETF and funds balance ideas: diversify from US with XMWX.LSE?

Hi,

I have held two index funds for many many years, but I think I need to move away from US a bit. Or perhaps I already am OK.

I have got:
50% L&G US Index C Accumulation : ISIN GB00BG0QPL51
50% HSBC FTSE All-World Index C Accumulation : ISIN GB00BMJJJF91

These have always done well.

I am considering either:
- replace one of the funds with xTrackers MSCI World ex ISA UCITS. Ticker: XMWX.LSE, or
- add XMWX.LSE with a 33% split between all three trackers.

The XMWX is EU developed 45%, Japan 19%, UK 12%, NorthAmerica 12%, and Australasia 6%. ( % are rounded ).

The HSBC all world is around 60% US, and 40% developed EU, China, JP, UK, Canada.

The index funds I have got have got very low costs.