EOS roadmap says they will have their 1.0 product ready by Fall/2018. 2025 is a full 6 more years and in that time the crypto market will hit 1 Trillion at some point. By some estimates in 2025 the market might be around 5T. To be conservative lets say 2.5T. If EOS is a game changer that everyone thinks they can be, can they capture 10% of the market (250B). That would mean EOS would would be $250.

I don't own EOS so I don't know what wallet options there are. However if you do own a lot of it that you plan to hold long-term it's best to get them in cold storage.