There are different Investment Vehicles, you can put 20-30% in high risk trading account, 20-30% in long term/low volatile stocks, and the rest in bonds, CDs, cash, etc. It is very hard to have a 70% loss with that.
Indeed, it would be virtually impossible to have 70% drawdown, with such exposure among different derivatives & allocation sounds -
good enough , even if actively traded ;
still with some space to improve/adjust :
* blue chips in equities portfolio, would correlate a lot, so better just go long at VOO/SPY
* instead of CFD's , long in commodities like gold
* ofcourse, no ,,Argentiny'' bonds

( maybe some ETFs for developing countries etc )
Little bit more and that would be like R.Dalio's
,,All weather'' type of portfolio.
But all of that sounds
good enough, only if those equities/bonds/commodities are trade as well, as swings/trend following.
Otherwise, (maybe i am missing something ?), i see no rationale in such approach - life time long on those and trading only with 30% of capital.
(unless that person is trying to learn, or has no clue about what is he/she doing, in that case it should be reduced to 10% or forget trading at all)