NakedLunch

Hi! First of all, for some strange reason I've never played a Spiderweb RPG before. I tried the demo for Avadon just recently and quite enjoyed it. Now I'm considering buying the full version. I was just wondering how long the game is. If I mainly concentrate on the main plot and do some occasional side quests, how long will it approximately take me to beat the game on the normal difficulty setting? Thanks!