Personally I would hold on to your 1k and use it as influence as intended - think about delegating when you have more to spare.
At present at 500 SP 100% vote is worth something like 0.03$ which is just enough for a vote (on a comment or post at 0$) to not turn to 'dust' on payout.
Good luck!
Also, if you are pretty verbose in your comments, it might be worth joining my Engagement League - free and with prizes each week, cheers!