| GM Arkwright |
Thaaaaaaaaaaat's not a great combo.
-As written, you can't use Spell Combat with cards. Thus it's really hard to recommend the Card Caster archetype. If you can get your GM to houserule a better version sure, otherwise keep in mind that serious limitation.
-Getting sneak attack is difficult, getting RANGED sneak attack is near-impossible.
As for 'fanning the hammer'- you can get a ton of attacks with the right feats. By taking Two-Weapon Fighting, Improved-Two Weapon Fighting and Greater Two-weapon Fighting you'll be throwing a ton of cards. More so if you can take Rapid Shot and Manyshot, pretty sure you can.