I had a good crack at it last night. Levelling up is sooooo much quicker in this version, maybe because of the 4x speed. I've just been running through places at full pelt with gambits set to attack nearest visible. Jumped from level 28 to 37 in a few hours by going through the Zertinan Caves. Also got a nice 100,000k gil from selling all the loot.
Also got my 2nd Esper from the Caves. Adrammelech. Forgot he was there, went in and got destroyed. Just got stuck in an endless loop or reviving and curing. Restarted from the auto-save, changed a few accessories and gambits (Basch and Ashe to Foe - Undead - Attack so they can sweep up the zombie things that are spawned) whilst I just attacked Foe - Flying so I hit Adram over and over. Accessories to nullify Electric element meant it was over in a few minutes with no deaths. Hooray for preparation!