every class can make great utility of engineering, but palas in particular synergises with it to an absurd degree because of the broad range of utility already baked into the class.
you’ll never get bored of bubble/repentance into death ray.
basically the minor problem of engineering is that the gadgets can backfire, but paladin can negate most if not all of them because of their design
Think I would go engi / mining, then swap to engi + enchanting later (just to be able to always disenchant).
Then id eventually try to get an alt with alchemy + mining.
Make it to like 50 ish and you can get major mana, then you just lack zg rep for zg pots/elixirs. Everything else you can obtain as boe fairly easily.
Tailoring, is less use id say (mostly boe). Prob better off to make some lvl 35 tailors/lws with salt shakers and permanently park them at a moonwell.