Large audience I would say no. Since large would be around 100 viewers which you won't be getting when streaming Dofus. Only a few French Streamers can pull this off.
You have to work really hard to get some viewer base. Start using twitter and tweet every stream to Dofus_EN. Get into the Discord Channel for Dofus and promote. Stream daily to get people to known you.
As Ultimate said Alpha grew really quick as she did the right things. She used a lot of social media. Instagram, twitter, giveaways. She talked a lot with the viewers, did few other games aswell. And is just a very open person in general.
Personality is very important on Streaming, doesnt matter which game, but I feel for Dofus you need to do even harder. Since Dofus is just rather boring to watch. You need to do something special..unique to let people stay and watch you.
Goult is nice to stream but after that your viewerbase will drop insane and it sucks, I personally didnt liked it. People followed you at that time and never came back. Its like a fake confidence boost.
But in general its pretty hard in my opinion to get your name out there for Dofus since there are already quite soem good streamers. And viewers wont move to another streamer easily, for sure if they are active. All these streamers can help you though, with question etc.
So tldr: Its hard to get a big audience and make it viable.