Numeric SP goals seem to be a bit nebulous to me. I had aimed for 3,000 SP by the end of 2017 but actually finished off the year with 4,300. My short-term goal is now to become a dolphin (10,000,000 vests or about 4,882 SP).
The vast majority of my SBD has been converted to SP. Some has been used for donations, a small amount taken off-site and converted to BTC for no good reason. About half of the SP I have has been earned here, half bought with other cryptos.
I hope to grow my SP by about 1% a week. That would put me at about 7400 by the end of 2018. But if the price of Steem goes up significantly, my buying might go down, not that I’d have reason to complain.