I've recently been experimenting with something similar. I need to convert the DAC output range 0.55V-2.75V (approx.) to 0V-5V. So the DAC output needs to be offset by -0.55V and have a gain of about 2.3 applied. The best results so far are with a differential op amp circuit. I can feed the DAC into one input, +0.55V into the other and get an output in the range 0V-2.2V. The overall gain of the amp can be adjusted to give a maximum of 5V. There are lots of examples of differential op amp circuits online.
I prefer this to the summing circuit because I don't have -0.55V available.
BTW, I would recommend buffering the DAC output when experimenting with it. I managed to kill one of mine somehow. I think I've read that they are not very robust.