not sure if you bought it yet but if not or if someone else reads this wanting to know the answer, the answer is yes you will directly miss the first of as the second takes place right after the first and the third takes direct place after the second. buy all 3 games. buy final cut and you get all 3 with it as extras on gog. if you buy from steam buy all 3 separately and get final cut free. if you don't like any one of them you wont like the rest of them, though 3 and final cut are really different class wise.
sorry, I was way late to the party, lol.
Will I miss something?