Always enjoy a good 442 thread. Even tho I'm playing an older FM version, I'm using a flat 442 for quite some time now, to have those quick direct counters I really enjoy. I'm not as adventurous as you, I use a B2B instead of CM(a).
Upfront I use two attack duties DLF and AF. Whats interesting is that the DLF has the comes deep trait, so he's aggressive attacking the space with attacking duty but still comes deep sometimes. Most of my players have good jumping reach, which is really hard to find but it's important for the way I like to play. I love when the keeper take those long kicks, the player wins the aerial challenge and an excellent chance for a quick counter happens.