Basicly the fastest and most efficient (dont confuse with effective) way to level those last few levels is the following:

HIGHLY RECOMENDED TO BRING A FRIEND ALONG such as a guild member doing the dailies or simply pugging it on the planet through /1.

1. Wrap up your class story by level 47. You can try finishing it at lvl 46 but being 4 levels below can make it dificult. So generally aim to reach 47 and finish the class quest on Corellia.

2. Go to fleet and pick up the Ilum breadcrumb and the belsavis bonus series quests in the central ring. These are only available after you complete class quest and get INTERLUDE status.

3. Do all ilum quests, including the dailies.A couple of the quests may be too hard solo, culminates with the Battle for Ilum flashpoint quest (can be done on HM). NOTE: You can skip the planet quests and focus solely on the 6 daily quests. After that head to belsavis.

4. Head to belsavis and complete belsavis bonus series. Just do all the lvl 50 quests you come across while doing the bonus series chain.

These quests award you with 128 epic enhancements. With the comendations you can buy 128 mods and barrels/armourings/hilts for 8 daily comms each (i think). You also get companion weapon at the end plus a few custom items on the way. You'll end up with aditional 200k-ish money. This is the fastest experience gained, highly recomended to do with a friend (or pug it). The money will help you pay for the new skills and 400/400 recipies, recruit gear and augmented gear on GTN.

Blackhole dailes on Corellia are only available at lvl 50. Hope this helps ^^

MORE INFO AT http://dulfy.net/2012/04/13/dailies-and-pve-gearing-in-1-2/

These quests award you with 128 epic enhancements. With the comendations you can buy 128 mods and barrels/armourings/hilts for 8 daily comms each (i think). You also get companion weapon at the end plus a few custom items on the way. You'll end up with aditional 200k-ish money. This is the fastest experience gained, highly recomended to do with a friend (or pug it). The money will help you pay for the new skills and 400/400 recipies, recruit gear and augmented gear on GTN.

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While these are good suggestions you have the numbers wrong a little. The Ilum Heroic 2 quest rewards you with a level 49 epic Enhancement while the first Heroic 2 on Belsavis rewards you with a level 49 epic Mod and the third Heroic 2 on Belsavis rewards you with a level 49(124 Rating) epic Armoring. You will get daily commendations for each of these quests and you can buy Barrels/Hilts/Armoring(all level 50 126 Rating epics) from the vendors in the Daily Areas for 8 commendations each. You can also buy Rakata Implants and Rakata Earpieces for 120 commendations each and Campaign Relics for 200 commendations each. Also while you make a little more than 200k from just the quest payouts you end up making closer to 300k+ when you add the credit drops and vendoring the loot you will get.