chain

Take a tip from and old fart and order new sprockets with the chain.

One should never mix old and new, chains and sprockets marry for life.

Putting a new chain on old sprockets will very soon make all components unservicable and present a very high risk of chain breakage, which could cause other expensive problems.
 
^^^Good Advice right there!!! each chain/sprocket combo are 'worn in' together. putting a new chain on NEEDS to be used with NEW sprockets to 'wear in' proper.
i run a +4 and my total link count is 105.