tracking dont need doing unless you tamper with the tre(track rod ends)
drop links can be removed by undoin two simple to remove nuts and replacing parts, i think the parts are cheap 10/15 quid i think.
ball joints wont need replacing unless rubber is split or they are worn out to test thisdo the following,
jack up and support car place one hand over the top of the wheel and indie wall then one hand underneath+outside side wall the wheel using push pull method to shake the wheel, wheel will be heavy so use some strength behind it, if there is movement (may feel like you are lifting the wheel and resting it again) then your ball joint is worn
track rod end
simular to above but side to side if free play is felt then tre is worn and your tracking would need doing afterwards which can cost an extra 30 quid