Hmm as far as a level rush I don't know. But what I like to do is something I think I saw bjergson doing once.
This is assuming you're on botside. Which is my preferred
play side.
I also take

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Box red 3-4 times. Ask bot for assistance Clearing small minions ahead of time so they know whatsup. Alternatively, in soloQ ask your carry if she wants red. Then spam laugh when your boxes take it. Just kidding. Kind of.
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You should be passing wolves by the time you achieve red buff if all goes well, if not thank bot for participation and give them a boost of confidence telling them red will surely win bot lane. Do not be disappointed if this doesn't work every time. Sometimes people are silly and tank the big golem away from boxes and such. Just explain to them ahead of time to attack red and hope they're clever.
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Start and finish blue asap regardless of whether or not red went well. Immediately deceive over blue wall and hit B. to reset your stealth timer on Q. Yes it's dangerous to go into their red jungle without E. You're going to be there so fast it's stupid anyways.
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If you opponent has stopped for wolves, you're good to go, you can take red immediately from him/her.
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If you're not sure, drop a box to the bush next to wraiths and continue as planned.
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If you have red, and they show up. Womp them with
if they go to ward or start red. But box to the left in case top responds, or box up and to the right so they can't leave as they're approaching you. This can't be done if you boxed wraith bush and isn't recommended if your opponent is in the rare case ranged.
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Do not wait ever. At their red. In the perfect scenario that red is gone and all they have left is a whisp of smoke and two lonely baby minions.
Recap
Box red a buncha times.
Run to blue and do it.
Hop on over to the other red asap.
Take it asap, but with caution.
Priority is on buffs not kills. If kills happen congratulate yourself then run like the dickens.
I find the best xp for myself personally is permanently owning all 3 buffs for as long as you can maintain. And top/mid is always easier to gank coming from tops jungle to avoid wards. So if you manage to save ignite and such, go wild.