As a number one priority, I would target Vokoun and then if unsuccessful, Nabokov. I would let Gus walk and work with Reimer as a backup.
On D, I would look for some tough, defensive oriented players who can eat minutes, but won't cost too much. Greg Zanon and Adrian Aucoin if possible - Aucoin on a one year deal. Other players in a similar mould may be out there.
I agree with Tiger on guys like McClement, Moen and Prust for the third and fourth lines.
If needed, I would buy out Komisarek, but guys like Armstrong and Lombardi may not make the team next year with these new additions, in which case they would be demoted to the Marlies.
Finally, if I thought I could fit him, I'd try for Parise. Yu need to add guys of his calibre when you can and the Leafs in particular need high end, puck possession forwards.