(adsbygoogle = window.adsbygoogle || []).push({}); If i use F*ckPSN, 3.56Spoof and PSNinja would it be safe to connect to PSN on Kmeaw 3.55?

No one has said it isn't safe so I would say go for it.
But you might get banned if you cheat, use obvious pirating methods, and in general other things like that.