OK, on monday I will try for the first time to play with scum and with this list. What do you think about list? I will not change ships but you can suggest some equipment change. Thanks!

Guri (36)
StarViper (30), Veteran Instincts (1), Virago (1), Autothrusters (2), Fire-Control System (2)

N’Dru Suhlak (25)
Z-95 Headhunter (17), Cluster Missiles (4), Glitterstim (2), Lone Wolf (2), Guidance Chips (0)

Binayre Pirate (15)
Z-95 Headhunter (12), Ion Pulse Missiles (3), Guidance Chips (0)

Tansarii Point Veteran (24)
M3-A “Scyk” Interceptor (17), Veteran Instincts (1), “Heavy Scyk” Interceptor (2), Stealth Device (3), Tractor beam (1)

my first scum list was

(97 points)

Dengar: (33) 54

Engine Upgrade (4)

Punishing one (12)

Attanni Mindlink (1)

K4 Security Droid (3)

Unhinged Astromech (1)

Guri (30) 43

Autothruster (2)

Virago (1)

Attani Mindlink (1)

Plasma Torpedoes (3)

Sensor Jammer (4)

Cloaking Device (2)

this was really fun to play and the mods i would make to this is:

Plasma Torpedoes to go on Dengar

Add Inertial Dampeners to Dengar

For my first scum list i was happy with it

I like it, but it's a very Squishly list. I wish I could find a way to make the Syck's work. They are just too damned vulnerable.
I like the mobility of the M3-A and the Viper though. I've used VI on Guri before and in this list it looks like you are using the PS mods to keep the majority of the squad at PS7 to go simul (your option of order obviously) which helps with positioning and using that Tractor beam to good effect, all of which relies completely of course on the fact that your opponent won't see this coming and blow the M3-A out of the sky with one or two salvos in the opening turns. That said the plan refuses the modification of EPT's so there is little room for you to modify what you have without changing the ships. I get the IPM's on the pirate, though if he doesn't alhpa he'll likely miss his chance to use them. N'Dru with Lone is a decent combo though I find it hard to get off when you are zipping around with a squad of four. You'll almost always be within range two of a friendly, especially if you want to be within range 1-2 to use those missiles.

Carefully flying this list will be the key to using it successfully. It's not a hammer like fat Han or the Ghost, or a fly and forget like anything with TLT. I honestly can't think of anything to modify that would make what it appears to want to do any better.

Good luck. I hope it works out.

Great reply! I know that this is a squishy list but I don´t like some generic "great working" lists and I give a try with this one.
N'Dru will have to be positioned on the other side of all other and Pirate will have to come in the fight in second wave if possible...we will see and I will write a report.