Excellent rifle, I would recommend these to anyone. As for the weight, use it too your advantage, I find light rifles harder to keep still, especially at this time of year with the wind blowing it everywhere.
On the subject of slings, your choice, I hate drilling a stock, as if you make a mistake, you will regret it!!! You could always do what I do in this situation, a slip sling, one end slides over the stock, the other over the barrel, adjust to suit yourself, no problem. Where to get one?, again do what I do, good old eeekbay, get them in cammo etc, cheap as chips and light as a feather.