Skip the first and play the 2nd... 10 hours into the 1st i gave up.. sooo boring. It's after the first part its good according to everyone, but the 2nd sums everything up nicely and explains a few things.. can't remember off the top of my head because its been over a year since i last played it fully
Also download some mods for the witcher 2.. i got some unlimited weight mods and some money mods. Honestly those are lifesavers. Money is super hard to come by and the mods help make it easier but not cheating. Otherwise you'll be stuck with low level gear till high levels... also now i remember to get a skill mod to get more skills per level.. otherwise you'll never be able to unlock all the skills making each choice pretty damn important. Only recommending it because you have limited time to play it otherwise i'd say don't use it