You've given it careful consideration and waited until the business climate was right: so why are you still hesitating? Float that idea, go after that project, make your move. If there's an issue, you've got your data: and your plan b. Wednesday through friday may see high jinks at work or miscellaneous office politics or gossip; while it may be distracting, it's just human nature. No, you don't have to join in, but do let it run its course. Any business you conduct this weekend is done with ease, and work socializing makes for stronger relationships: and even great new connections.