I found a fetish cycles fixation single speed with a rear derailluer hanger for a good deal. I was looking at azonic steelheads due to their strength and price. I was wondering if I would be pushing it by running 150mm on the fixation, I don't want to stress it and have the head tube break on me eventually. If it will be too much I'll get a travel change kit. It is a DJ 2, I would like to use it since it has a 20mm thru axel. I also have a manitou black with 90-120mm with QR skewer, what kind of abuse could that take, drops, jumps? How strong are those QR skewers? I'd like this ride to be pretty burley. Thanks