OK - my advice is simple.
1) The previous poster is right - Blinkstrike is too slow for OH. There's usually an admantite rapier on most AH's for the OH - fast and OK to start out with. But I would go further - if you don't have much money I'd sell both Blinkstrikes - flying mounts are expensive and the so-called welfare epics are better and achievable with some grinding in BGs. Most players in BGs will forgive you green mid-60s weapons if you are trying hard so just plug away until those epics are yours.
2)
Shadowpanther is your friend. Work out whether you want to be PVE or PVP and start gearing up for it. Don't divide your attention or you may become bogged down and lose heart. If you want to be totally depressed try
Imba 3) Do not expect to go to heroics and Kara immediately just because you are level 70. These are a lot harder than normal instances and you do not want a reputation on your server of being a liability. Wait until you have improved your gear to a reasonable level. The number one hobby on my server seems to be checking each other's gear during pauses .. your companions may not say anything about your gear but they will remember.
4) The most depressing thing I found out about L70 was that I went from feeling good for almost making it to the top at 69 to realising that making it to L70 is just half the battle. Well done and congratulations on reaching there but when an enemy in full S3 epics hands you your head without seeming to pause for breath you get to realise that gear is probably worth another 10 levels and will take longer to acquire.
5) Take the time to get lockpick 350, cooking 375 (daily cooking quest - Hot talbuk steaks ... yum ^^), first aid 375 etc. These things make your life easier .. lockpick is specially useful as it allows you to bypass the Arcatraz and Shattered Halls key requirements, opening lockboxes for fellow 70s is another good way to build up your goodwill.
6) Have fun. All work and no goofing off made Jack a very dull boy.