Should I wait for the i390 or keep getting tome gear?

[AncientCrystal]

What content do you want to do? Or rather: Are you doing Savage or not?

If you arent doing Savage... it doesnt really matter, to be honest.

So, if you arent raiding: Get the Suzaku-Bow and spend your tomes on something else. It has better substats - Crit and DH - and is only 5 ilvl lower than the Scaevan Magitek Bow. If you're not raiding you wont get the chance to upgrade that bow to ilvl400 and are probably better served with a bow that has nice substats and only loses out on 5 ilvl.
If you are raiding and have a shot at upgrading the Scaevan Bow in the near future, I'd save up for that - specially because you should have the tomestones anyways, considering that only the gloves, belt, shoes, earrings and rings are actually nice for bard.

Yea, I raid. I'm stuck in PF for O10s. Good advice though thanks!

[HyoMinPark]

Yea, I raid. I'm stuck in PF for O10s. Good advice though thanks!

The Suzaku bow is infinitely better than the tome bow and the crafted bow. So you should get it ASAP if you haven’t already.

[EdgeFayth]

Yea, I raid. I'm stuck in PF for O10s.

Keep your i385 bow and buy all your BiS items then. BTW, you should have bought all of them now (gloves, belt, feet, earrings, ring). Next week, you should have enough tomestones to get the i390 bow if you wish (I think it only makes sense once you have cleared O11S but have issues with DPS checks on O12S).