the fact is , that you wont calculated your unit (and that you can t understand) and you wont charge it with load tester

a fan controller will be mandatory only when you have very low ambiental temperature( specially winter time with external unit mount outside) so in your case , using it on the desk at normal ambient temp you will not add to much at evaporator performance , in fact you will modified superheat ...but stay did you calculate your superheat and subcooling? the fact is that you don?t understand this thing!
i look over your subs on hwbot ...that tell me your SS can?t do much over a good water loop!