Tappets are about £250 a set i think.
Thats about the right price for the rack too!
I take it you bought the car as a daily driver to keep the miles off the RST in your sig.
If the cars a good un why not bite the bullet and get the jobs done as the RS2K is a really good daily driver type car.
I find mine a lot better to drive than my RST TBH!
Why not get some reprofiled cams at the same time as tappets they're only about £180