When you are doing handiwork around the house you use the right tool for the job, you don't use a sledgehammer to put in a tack. So why not take that approach to DE shaving? Use a razor optimised for each pass.
So:
Pass one. Merkur slant bar for the maximum possible stubble removal.
Pass two. Edwin Jagger DE89L for the most effective reduction.
Pass three. Weishi to buff and polish without it biting.
An adjustable doesn't have as much range and it is about the whole razor not just blade exposure.
In practice this method gives a better result, faster, as you would expect.