Raised alt and ggt also weight related- could you lose some?
In isolation abnormal liver tests not too worrying (depends on levels) and often takes years to truly pickle your liver.
But- you are drinking more than recommended so may be worth reducing for 2 months and rechecking.
What's your MCV? if raised (size of red blood cells) and ggt also raised then 95% due to alcohol- and not sure the medics will be too happy