Is it possible to have all these?
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I'm... not gana try and count those, that can be your job. Use a spreadsheet ,start row 1, go up to row 50. If you've followed the perk tree's you should be fine.
Also, consider this...
An assassin needs to be an expert of being able to eliminate a target, unseen, unknown, and with out a scuffle. They are the silent killers that will be able to deal death in any situation no matter what their mission, no matter what the circumstances. They have all the tools and resources they need to accomplish this. No one will ever know they are the assassin, some may even think of them as "friend".
This said, your setup looks good. Strike from afar, strike from up close. Poisons to silence and paralyze. Sneak in the shadows, lockpicking/pickpocket to gain entry. I personally would toss speech, from a gameplay perspective. And i would loose 3 perks of light fingers just to master lock picking, otherwise those master locks will just svck to break through.
Looking again, your list seems to big. Specialize in 4 skills, and support your self with another 2-3. You seem to be trying to go full tree in more then a few...