Catching up DoL/H in "current levels?"

[Omedon]

My previous stint in the game, during a lull in WoW in late BFA time (so still during shadowbringers), I was blessed with the "road to 70," which I used to get every crafting and gathering job from 1-70 once my at the time main job had progressed as far as the story was at the time.

The firmament was invaluable for the home stretch, but I think I kinda screwed myself by basically dropping all other forms of progression (mostly gear) that weren't involved with getting me *TO* 70.

But now that I'm fixing to likely become a FFXIV lifer, I'm kind of at a loss at how to pick up for the 70-80 game.

For starters, having leaned heavily on poetics in my DoW/M "joboholism," my first question is whether there is a poetics-like system to outfit my 70 DoH/L jobs with the same ease.

If I'm being honest, I'm really only interested in maintaining cheap, roaming repairs, so I'm not really interested in engaging with like... time gated materials to "make a thing to make a thing" to craft my gear if I can avoid it. Is there not a currency system I can chase while getting XP?

Beyond that, what are the reliable sources of XP in this level range? Should I just grab a pickaxe and hit rocks to burn rest XP? Is the firmament still useful?

Thanks for your wisdom, once again, FFXIV community!