The plan's first and second step

Step 1 try to incapacitate Orochimaru.

Step 2 steal his stuff.

Step 3 Time-Space jutsu the hell out of there into Naruto's body on the day of his birth.

Step 4 Chaos.

All in all, a pretty simple plan.

I walk around the Lab, knowing it like the back of my hand since so much time had passed since my arrival in this world and my awakening in this lab. I directed myself towards the training field early in the morning, where I had agreed to meet with Orochimaru to have our daily sparring sessions.

The snake man, looked at me expectantly, "Ah, Yami! you've finally arrived", he says.

"Yes, Lord Orochimaru,""I'm here, for our daily sparring" he grins before entering a stance. I grin in return entering my own stance, this being at about middle hight, left hand in a fist at the front whilst the right hand was like an arrow, and behind his back. 

We both rush at each-other, I aim for his face attempting to shatter his nose, before he ducks and snakes around my continued attacks, bobbling and weaving after noticing this, I switched styles, activating my Crimson Demon eye, allowing me to see his Chakra pathways, I switch into a stance more akin to his, I attack with the gentle fist, aiming for his important organs, he slithers through, but I'm able to get a lucky hit on his left arm rendering it mostly useless, he hisses before attacking me in retaliation. He hits me a few meters back, my right arm feeling numb. I rush forward once more, dodging the majority of attacks as one grazes me. I grunt in pain and surge forward, another attack aimed towards me, I block and counterattack, successfully landing a blow, this time on his neck, stopping his movements. I then activate my Gauntlets, this being Samehada's scales emerging from beneath my skin to form a pair of gauntlets. I pierce ochimaru's chest leaving him incapacitated for a while, as I knew that if I went any further the slippery bastard would escape using an instinctive jutsu, and that the only reason I had been able to get the upper hand is due to our "sparring". I rush away from the sparring grounds, directing myself towards Orichimaru's office and Warehouse.

Upon reaching the warehouse, filled with food, money, medical technology and other resources, I immediately store everything in my Kamui dimension. I then run to the snake's office. I arrive there opening the door, I search the walls, lined with scrolls, for some kind of secret passage. After spending a little while searching, I accidentally bump into the right corner of his desk, "click", my head spinning around so fast it nearly gives me whiplash, I face the wall behind the desk as I see the bookshelves move back and to the right revealing a hidden vault.

I enter the vault, I then check the different walls, seeing jutsu scrolls of many kinds. After a while of searching I enter the deepest part of the vault where there were weapons and kinjutsu. Among these were the Reaper Summoning Jutsu, the Uzumaki Reaper Mask, Orochimaru's Kusanagi, Itachi's Kusanagi, Scrolls on the Cursed Seals, the Iwagakure kinjutsu, along with a scroll on the Hundred Healings Seal. All of which I then take and place within my Kamui dimension. 

I then rush out of the hidden lab/base, dodging every patrol I encounter, the exit within my sights before Suigetsu pops in out of nowhere! 

"Stop!", I stop, obviously since he's pointing a massive sword at my face, I'm on guard and so is he, we don't speak for a few moments. He then rushes at me, sword aiming for my neck, faster than I can react, my Sharingan blaze to life, but it's too late. Darkness envelops me once again.