Re candidacy: I have seen severe cases having had amazing comebacks. You appear to have high sides (and nice temples), but your crown is falling very deep. Best to get an in-person consultation with one of the recommended docs on this forum, in particular Dr Sethi, Dr Muresanu, Dr Hasson, Dr Wong, Dr Barghouti.
Look up the case of@Bandit90
Re strategy: I guess the strategy is always to fix the front first cause aesthetically it is the most important.