I believe Stellar will do well. More partnerships will be announced, IBM will sign up new corporate customers for their Stellar-based payments solution, and the new UX/UI for SDEX will absolutely rock.
As for the price? So far this year, the entire crypto market hasn't responded rationally to good news. Even worse, altcoin prices continue to be linked to BTC, so no matter how great an altcoin does in regards to development and real world use, its value drops when BTC drops. Eventually this linkage will be severed but probably not in 2018.
Thus I expect the XLM price to stagnate or dwindle for 2018, possibly into single digits. It will take 2 - 4 years for XLM to recover the ATH of early 2018, but when it finally does, it will rocket to several dollars.
Disclaimer: my crypto predictions are usually wrong.