Some things you can do while leveling is:
Do the Heavensward hunts. Not only will you earn Exp, thus helping you level, but the Centurio Seals can be used to buy a full set of i200 gear and upgrade it to i210. Not quite the same as i230 gear, but a good starting point.
Run Palace of the Dead. This can give you an i235 weapon fairly easily, and if you keep running it you can upgrade that weapon to i255.
If you have some Silver Chochobo Feathers (gained as part of Recruit a Friend campaign - if you don't already have them it is too late to get them) you can exchange 5 of them for chest and leg pieces of i230 armour.

The rest will have to wait until you reach level 60.
Do daily roulettes and take advantage of first-time bonus of level 60 dungeons (and spam dungeons later on) to earn tomestones.
Participate in Rank A and Rank S hunts at levelcap for tomestones.
Do Palace of the Dead at level cap for tomestones (and getting a better weapon if you aren't already i255)