multiswitch setup

[haloweenhamster]

Hi I'm new to satellite equipment and want to add to a multiswitch
Where I live there is a vision ev5-532m multiswitch
I want to add;
Vision v5-204
Inverto IDLU-UST110-CUO1O-32P
Lem sck54/1t

The questions I have are;
The v5-204 has a DC switch, does that mean I don't need DC bockers if I come out of the right hand ports?

If it does block DC on one set of outputs is the lnb powered from the bottom outputs?

Will I need anything between the lem and inverto?

There are 2 feeds coming into the flat which are split into 4 (2 feeds into each room in parallel) I currently have;
sky hd
Mutant hd51 s2 & t2 tuners
Ferguson arriva 4k combi
Sony KD55XD9305BU sat & t2 tuners
All of which are scr compatible, is there anything else I need to consider?