You're asking the wrong question. You're not looking for a non-tomestone way but a quick way.

Trusts and crafting are definitely not quick.

Meanwhile, every level 80 dungeon you do will be giving you Allegory tomes, while trusts will be a lot of grinding before you can make any use of them.

Invest in an Exarchic weapon (because weapons are tedious to get other ways), buy some Crystarium tome gear to get you over the line for completing 5.3, then if you only play every so often you might actually want to leave off at the end of 5.3 anyway because it's a clear "season finale".

If you keep going, playing Eden once for story should land you with enough tokens to buy some upgrades too. You're not burdening people with difficult raiding, just playing something on the level of a normal trial.