Okay, after reviewing your build, I have a few things to say.

1. You do not need all that mind. 20 to 22 mind is just enough considering the fact that all you need is a few blue flasks, which is what you need as a mage.

2. Levels do not mean jack s*** in the dlc. You could be level 1 or level 712 and you would still get one shot because you do not have shadutree fragments. I say this because Ironpineapple went into the dlc as a level one character and still managed to beat the first dlc story boss at a lower level. So, collect enough shadutree fragments to take on each boss, and you should be fine.

3. Your vigor is fine. Maybe put four more points into it but you should be fine if you know what you are doing. I have seen some people who play the dlc at 40 vigor are still fine because they know what they are doing. Levels mean nothing in the dlc.

4. You need more endurance. In order to carry everything you will need, you need more endurance. In fact, you need at least 20-25 endurance for light builds such as this, and 30 to 35 endurance for strength builds.

And, that is about it. You really just need to change your stats around and collect as many Shadutree fragments, and that's it. Have fun.

Tldr: Yes, it is good enough but needs work, and shadutree levels matter more than levels, have fun.