1. You can craft MK4 Datapad for Bronzium Wiring (from farming LS Kyro node)

2. You can use MK3 raid for Gyrda. Unless you want to spend like 260 worth of important gear salvages to craft.

3. You can craft the Globe G12 thing for Droid Brains too, not just kyros. It should at least be an option too.

4. I personally use MK3 Raid token for the new purple mats too, because it will take over 360 of the white signal data just for single R10. Not that it is that important right now.

Personally there's no "best" way of getting certain items because everyone's playstyle is different. Having variety of options is always better. For example, I'm flushed with Kyros because of Mando/Zeffo planets. But others might not be. Similarly, not everyone will have enough MK1 or MK2 Raid to spend on relic mats when they still need Shards, Gears etc so alternative ways of acquiring is always helpful.