Good idea to do the water pump as its a pain in the ass to get to. Should be a touch over $100 for a reasonable one, as should be brakes. Depends if the disks needed doing also... Spark plugs cost $25-$30 for six and isn't a hard job depending on what kind of plugs they used. Iridiums you're looking at $150-$200 for all 6.
Timing belt kit can be had for around the $300 mark. $10-$30 here and there for flushes, oils, filters etc all adds up too. Labour would be the big issue.