Cheapshot > Rupture > Mut > Slice > Mut > Mut/Dispatch > Kidney > MFD > Envenom > Spam damage
There will probably be a short amount of time between the cheap and kidney where they're not stunned but I'm not entirely sure what to do about this unless you'd want to purposely go for a shorter stun i.e. 3-4cp kidney also you can put vendetta on your target before you open for extra damage as I'm pretty sure vendetta doesn't break your stealth.
But you're going to want to be playing with Marked for Death still like normal sub spec.
Also the reason I'd Mut after Slice is because it gives more combo points than dispatch if I'm correct, you could dispatch then mutilate but you should always throw in a mutilate just so your following kidney is that bit longer as you don't want them having more than 1-2 seconds of freedom where they could stun, use defensives etc.