I’d concentrate on getting the bike mechanically sound to start with.As you say new pads and cables for the brakes.New gear cables, chain,cassette and chain rings.New btm bracket if its worn out.Things like wheel bearings and a good set of tyres.Whats important is that you get out on the bike asap.Unless the forks are totally shot leave them on for the winter, think about better ones come spring. Get it working,get out and ride think about upgrades later.