You're welcome, it's interesting to have advices and opinions .
Pedals and flex torch seems indeed to be really practical. The Stahlwerk exist in kit with these two accessories (400€ for DC ans 650€ for AC/DC), but I'll see in a few years if this model stay reliable and if better offers appears on market.

@unterhausen: I'm not focused on TIG yet, I plan to buy a good one when I will have a large enough workshop, and after following a training, but for the moment I haven't a lot of space and prefer stay on a more economical system (furthermore the torch would be usefull for general DIY: bend metal, plumbing, forge or temper some parts, melt aluminium..); if it allow me to make strong "welds" on bikes and is not too hard to learn I'm fine with it. I'm quite fan of big round fillet on bikes too.