Your portfolio (excluding cash and 2a) boils down to following
X% World Equities + Y% Swiss equities
Y is upto you to decide. X+Y = 100%
But I would suggest to do a calculation if you would be better off keeping Swiss portion within the 3a as much as possible. Reason is that Swiss equities tend to have higher dividend portion vs the world equities.
You would need to account for
- expected dividend yields for X and Y
- Expected total return for X and Y
- marginal tax rate to be applied on dividends in Saxo
- Lumpsum withdrawal rate when cashing out 3a
- Wealth tax
Sometime back there was similar sofuasion on where to place Bonds , inside or outside 3a. Read here