Vmbsmps or vmbtr1+vmb3ps

i have no idea what option to go for …

basically i will have most stuff in my fuse box, except for 4 lines:
3X 20M to VMB6PBN
1X 20M to VMB1TC
3X 20M to VMB1TS

So what option should i go for?

1 x VMBSMPS will work just fine.

ok cool,

is this also true if i use UTP for the buscable?

Of course!

Just turn the adjustment screw to the right (13.2V)