If you were to go with that deck I would suggest at least replacing Unagi with Yu Mei. She is about the same price and will bring the deck up to 25 stars. She is definitely a bit better since she isn't shut down by SoA(stop opponent's ability).
Though what that deck really needs, despite how expensive it would be, is replacing Kati with Kuei. His revenge would have some synergy with Vortex.
FPC may not be the best clan to start out in ELO with though. Before the bans they were pretty much the worse clan in ELO, now they are better but you still might struggle until you can afford some of their better cards.
Vortex aren't weak. They are easily ELO 1300+ half decks. And please stop crying about 1 star. It's just one star. People win with 26 stars in T2.
@ Puddin Tame
Agreed. I didn't think of Yu Mei, my fault. The problem with FPC is that if you are your budget you cannot really get a decent half deck. What one would need is something like: Chan, Kuei / Hattori (perfectly Kerozinn), Fei and Nakata / Unagi or Sayura / Yumi (perfectly Marlysa). That is easily over 10k clintz.
this one isn't expensive... and im at 1304 elo atm. Generally Freaks are cheap and quite good in half decks. Tho u'll have to get their powerfull cards like Olga, Bogdan, Grudj, Baldovino, Wolfgang... Soushee and Esmeralda are good fillers. Vortex, Pussycats, Jungos are good clans to combine with, tho most other Clans work nicely too... just get some Damage Reducers.
I'd say elo is a lot about experience, you gotta find out how most ppl play and react to certain card combinations.