General

Dexless is the most cost effective unless you're going to invest over-the-top amounts to get very good potentials to pull a Low Dex over a Dexless. xD

But once you start Poison Bomb training, it won't matter for a while seeing you can use Subis and a 1 Att Garnier and still train amazingly fast. xD

Low dex...atm my base DEX is 50, is that good enough or more than enough?

Go low dex because higher levelled equips result in much better potential.

enough base dex + chaos helm + chtp + earring = all reverse gear.