The 22 fret 24.75" neck would in theory be the one to go for. The intonation would be way out with the 25.5" 24 fret neck.

But neither neck is suitable for an EX kit. Those necks are bolt-on necks, not glue in ones. The heel depth is too thin and the 22nd (or 24th) fret is achieved by an overhang. The 22 fret neck is meant for a Gibson style (SG or LP) or similar body, whilst the 24 fret neck is for something like an Ibanez bolt-on like an RG or S series that already has a 24 fret neck.

You could probably modify the 22 fret neck to work on an EX kit, but you'd have to glue on more wood to the bottom and rear of the heel to make it both thick enough and also to fill in underneath the overhang.

It would be a lot of work and certainly nothing that I'd be that happy doing myself. It won't look pretty, so you'd really have to go for a solid colour finish to hide the joins.

It would be easier to ask Adam if the factory could do a custom EX neck with a blank paddle headstock so that you could do a similar headstock design yourself. Doing your own headstock outline would be a lot easier than trying to modify the heel to make an Aliexpress one fit.