So far in ranked, I've gone with Lizard with full CDR (Brut, CDR boots, and 5% cdr mastery). Reasoning being that is Fiora is pretty much useless without her ult, so might as well get it on as low of a cooldown as possible.

I did a couple of Feral jungles in normal and it was good too. Very fast clear and her autos become pretty strong, but just longer ult timer.

Pros and cons to both, but I'm favoring Lizard atm.

I would go with Spirit of the Elder Lizard. The sustain on Wriggle's Lantern isn't enough to keep you alive in the jungle for a long time; which will cut your ability to stack. Additionally, while benefiting of kills and assists, Fiora's abillity to gank is like non-existent if the enemy team wards. You're probably best off by getting Lizard, boosting your gold gain and getting that Hydra quickly.

It depends. 80% of the time you'll be getting Feral Flare.

However, with the recent nerfs, Spirit of the Elder Lizard + The Brutalizer is viable if your team needs you to gank more often rather than farm because they have weak lanes.

A neutered team by the 20 minute mark isn't going to win the game. It's even worse when they blame the jungler for not ganking/counter ganking when he/she should be :p

Probably flare. Else there's no point in jungling her because she's a terrible ganker anyway.

I'll say taking Feral on Fiora Jungle should work really well but might be a bit longer for you to gank lanes but as soon as you get feral on her and the necessities you'll need you'll be getting really really fed.