I'm not personally a fan of most of his options with meter. His NeoMAX is really strong, but his other DMs are not very impressive in terms of damage compared to what he can get for free, and they bring him no new tools. His NeoMAX has no invulnerability but you can use it air-to-air and it comes out so fast that it generally can't be stopped unless the opponent's attack is already sticking out. It's a nice new option, but it doesn't warrant putting him on last.
Honestly I think the best use of meter for him is his EX Shoryu, since it's invulnerable and deals a ton of damage. His EX d/b,f+AC is also really strong in terms of damage and comes out extremely fast, plus it's safe. It's mainly just a punisher, as it's not invulnerable. His EX fireball can be really good too, since it's extremely fast and also eats up normal projectiles. He'll have all the meter he needs for that if he's on first. Really those are the only new options he gains from meter.
His HD combos are pretty solid in terms of damage, I'm pretty sure that for his HD combo and 2 super stocks he can get 750-ish damage in the corner looping d/b,f+A/C,hcf+B/D[Brake],d/b,f+A/C repeated until the gauge is nearly empty, and then NeoMAX, or more damage if you want to add a Max Cancel in there off his EXDM (I just play him first, so I'm not sure the exact numbers of damage).