Explain the plotholes, not very likely.. what's there is there.
However, let me "rewrite" the plotholes a bit better. Hopefully you guys will like it.
Narada vs Kelvin
Extra Romulan guy whispering to Ayel "we only have minimal shielding, our torpedoes are limited till we replicate some more. It'll take time though because traveling through the wormhole sucked out our powers through the shielding."
*Robau appears through this conversation, scene progresses as it was in movie*.
***This scene describes why Kelvin had the power and the time to actually mount the final ramming session. Narada was already crippled because of traveling through an unknown form of wormhole.***
Earth to Vulcan traveling time and back
Chekov's announcement
"May I have your attention please..." "...we have been traveling at warp-7.5 for 12 hours after receiving a distress call from Vulcan. The distress call did not tell us the nature of the emergency as it was cut short by an unknown reason at this time. We are to asses the situation and try to help Vulcan in the best way possible. On a side note the Vulcan high council did receive telemetry data close to the Klingon NZ about a 'lightning storm' in space. We are not sure if the two situations are related..." "...we will arrive in Vulcan in.... four minutes. Thank you for your time."
*Scene is followed as is in the movie.*
***This scene, though a bit longer than what we have explains the traveling time to Vulcan in a specified quantity and doesn't force the audience to fill in the blanks or for old fans to fight on message boards for years to come.

***
Nero traveling time to Earth
Ayel whispers to Nero as Nero is walking towards a bondaged Christopher...
"Sir, our drill was severely sabotaged during the skirmish and it'll take 6 hours at least for us to repair it to maximum efficiency. Also, we are low on missiles after the Klingon and Federation attacks...."
Nero frowns a bit, taking a deep breath, looking away from Ayel towards Christopher...
"Drop the Narada to warp-4. It'll give us enough time to recuperate."
*Then he walks towards Christopher, scene follows as it is in movie.*
***This explains why Narada/Nero took the entire time of NuKirk and Prime-Spock's June-December bromance to reach Earth.***
Kirk and Scotty beaming to Enterprise through transwarp beaming.
Spock: Mr. Scotty, I believe you can use your transwarp thingamagic to return Mr. Kirk to the Enterprise. You should go as well...
Scotty: Aye! Anything to get off this dreaded freezerock. But then we know that transwarp beaming is like <insert dialogue as is in movie>, and even then, how are we to target the Enterprise and who knows where she is at this time?
Spock: Every Starfleet vessel has a subspace I.D. code specified for that ship only. Its like a fingerprint on each ship. If we scan the subspace channels for such a frequency, we can easily pinpoint where they are in the universe. The Enterprise's frequency is.....
NuKirk: (interrupting) ..1966-08*09... every officer who wants to serve on the Enteprise knows this code..
Spock: (amused, Vulcanlike).. it is the same frequency even after all the changes. Amusing.
NuKirk: (smirking slightly) Guess you can never beat the original.
*Scene plays as is in the movie*
***This scene explains how Scotty could pinpoint where the Enterprise could be even after being so freaking far away.***
What do you guys think?