Well see, theres some new data and rules.
For starters, firecalcs 50/50 portfolio would look nothing like what I proposed, but then its tough to propose something thats workable in a no-win situation where theres only one accepted outcome and new data and rules keep appearing to make any alternative proposal undesirable.
What I proposed was some fairly high returning investments (far greater potential than the TSM component that Firecalc uses), coupled with some bond ballast and some cash equivalents that could be eaten in years when the stock component didnt do well.
It also seems you missed the part about the insurance company perhaps not paying out or existing in 50 years, and the inflation cap causing some problems in that time frame. Sort of defuses 'guaranteed'.
Since the original firecalc run you propose is 100% safe, you also likely didnt reduce the risk in the process either.
While I enjoy the banter and perhaps somebody learns something from these discussions, you really didnt pay much attention to what I had to say the last time and insanity IS defined as doing the same thing over and over while anticipating a different result...
Clearly your mind is made up and like the last time, you'll continue to either change the base parameters, eliminate other options or change the expected outcome to eliminate any other options presented.
Firecalc was a good tool until it produced results contrary to your plan, but now its good again because using it in an asymmetric fashion produces the 'right' results. Firecalc and the 25x rule are too conservative and leave too much money left over for people who will die before they spend it, but when considering alternatives to what you've decided to do, the 25x rule becomes paramount, as does life expectancies to 100-120. PICK ONE!
Heres my own worst case scenario to suit: guy buys his annuity, inflation runs to 18% for the following 10 years, with the 10% CPI cap reducing his buying power by 80%. The insurance company then goes bankrupt. Guy now has 20k a year income and his new downsized portfolio is non-survivable for more than a short period of time. In the meanwhile the stock market returns 30% a year for those ten years and the uncapped CPI bonds in the alternative portfolio keep pace with the 18% CPI. Bummer.
If that doesnt work, how about after the third year, all the guys arms and legs fall off, and the little used clause in the annuity that calls for it to suspend payments should the annuitant become armless and legless kicks in.
Good luck with your plan.