What’s up @DjJordyboy,
The X1850 will require you to get a Serato DJ Pro license ($129/U.S. or $9.99/mo U.S.) and for DVS you will need to get DVS Expansion Pack for Serato ($99/U.S.). The good thing about Serato is that if one you buy it there will be no other costs…EVER.
In addition, you will have to purchase the DVS vinyl (same if you were using DVS with Rekordbox). HOWEVER (and a HUGE however) do NOT get rid of those 1210’s!!! Call me if you decide to make that mistake…errr… decision to sell them… 