XM-L is usually good for around 3A, but at 1.4A you would still have a lot of light (400-500lm guestimation) but twice as much runtime.
Again, though, you are gonna have to be pretty good at soldering. Not expert, but it's still a bit harder than through-hole soldering, mainly because you are trying to get the solder to "wet" the board AND the brass pill, while the brass pill is cooling down your solder and solidifying it before it has a chance to wet to the brass.
But yeah, I'd hazard a guess that the driver is a 17mm diameter board, and if so, those AMC7135 boards should work fine.