@uwiikz
Some folk have to find fault with product they cant afford or are not prepared to invest in. At the end of the day you have purchased an outstanding turntable package. I have spent much time with the Kuzma 4Point11 tonearm, and the great thing about it is that it a very easy arm to set up and adjust. If you want to play with other cartridges you can purchase additional headshells from Kuzma so that your alternate cartridges can be changed quickly and easily.
Please bear in mind the Kuzma arm is a high mass arm ( effective mass 18g ) and so that means that the alternate cartridges should be medium to low compliance = this would suggest low compliance moving coils or low to medium compliance moving magnets. The Soundsmith range includes low compliance moving iron cartridges that would work well.
you will need some set up tools to change cartrdiges - I use the Feickert protractor for cartridge alignment, its very easy to use, and you will need a tracking force gauge. Make sure the dealer provides you the complete toolset (allen keys et ) that comes with the tonearm & turntable.
I know you will enjoy the music - at the end of the day thats the goal.
Enjoy.