Please don't misunderstand, what we are trying to say is it may or may not work.Short of a guarantee such as a defined benefit plan that is solidly funded or purchasing a single premium immediate annuity that is inflation adjusted, there is no absolute solution or formula that will provide you with that magic asset allocation. There are only three things you can control - rate of savings, time in before you begin drawing down and living beneath your means. The actual return can not be controlled - you take what the market gives you less some nominal expense. No model is 100% accurate - they are based on historical returns, what is that caveat added in each prospectus "past performance is not indicative of future performance".
That seems awfully low on equities.