As others have said, don't waste your money on expensive carts as you are just starting out & should concentrate on getting the basic set up right.

If buying 2nd hand you should probably disregard the supplied cartridge & buy a new cheap cart (plenty of choices here Denon, Sumiko BP, Goldring).

A Linn post-Nirvana mods (providing it is adequately set up & in good nick) should see off a Rega P3 with ease.