Williams will be an excellent short term signing for them. According to reports they've tabled a £17 million bid for Kone but, unless there's an unknown reason why they want rid, I can't see why Sunderland wouldn't hold out for a great deal more given the way Everton have dealt with the Stones transfer. Bony would be a great signing for them if they accept a bid for Lukaku but they seem determined to play hard ball with Chelsea. That seems to be defining Evertons transfer window and, whilst they might have done us for a few million more than we wanted to pay, they've already paid more for Williams than they wanted and will probably have to do so for anyone else they want.
Long term for Everton they need a new stadium. They appear to get shafted by the council at every opportunity and tbh I feel sorry for them in that regard particularly as Liverpool seem to get all the help they need. I hope they find somewhere in the near future that suits their needs and suits the fans. It would be nice to go to Everton away and actually be able to see all the pitch.