Firstly this is a very interesting build. But it is built on a number of false assumptions.
Firstly addressing your OP health pool, you are assuming you can cast Warding Bond on yourself. Which you cannot. It can be cast on you from someone else (defeating the purpose of a 1v1)
Secondly meta magic twinned spell does not work on spells with a range of self, of which Wish has a range of self (you are not casting Simulacrum by using Wish, you are using Wish to duplicate its effects, therefore you are trying to twin Wish which cannot be done.)
Dont get it mixed up, this is still a powerful character, but only outside of the scope of both the rules and timeframe given for beating this character (casting this many spell and features in a 1v1 fight most likely won't save you unless you have time to prepare, which kind of defeats the purpose of a 1v1 battle. Given enough time to prepare any character regardless of mechanical strength can become very powerful, its why kings are so hard to defeat even if they are mere mortals).