Hard to say much without knowing your team and scoring setup.
My gut reaction is that those are decent deals. I like the JVR one least (but it depends on your team too).
The other two are quality for potential. Always a decent gamble.
Hemsky's always hurt, but the picks and prospects haven't plaed yet.
Depending on what your squad, categories, etc. looks like, I'd think the Hemsky/Schwartz deal is a decent one.
Points-only, Full Keeper Dynasty League
Active roster (no starts, just total points): 12 FW, 6 D, 1 Goalie
Forwards: Kucherov, Barkov, Teravainen, Seguin, Hoffman, Lindholm, Gusev, Horvat, Meier, Perron, Schwartz, Johansen, Pavelski, Buchnevich, Hischier, Granlund, Bracco
Defense: Josi, Dahlin, Letang, Gostisbehere, Ekman-Larsson, Petry, Slavin, Keith, Matheson
Goal: Lehner, Holtby, Varlamov
Farm: Soderstrom, York, Woo, Tracey, Dorofeyev