Similar to a question posted earlier, but different person.

Very deep dynasty league with extensive minor league system.  No restrictions on draftees (last year, someone drafted A-Rod's 12 y.o. nephew...mostly as a joke, though) - can be domestic or international, signed or unsigned, high school, college, etc.  To my best knowledge, these are the ~50 best players available.  I have three picks in the top 20 (#2 #9 & #14), so some of these guys will be there.  

My team is very young and I need to build some depth, but want the best talent available in the first two rounds.  Suggest which 3 (or 4 or 5) I should target with my early picks.  I'm leaning towards Carlos Perez, Luke Jackson, Kellen Sweeney, and then???  I also have 6 more picks later in the draft.

Thanks in advance!

College
Jake Stewart    OF    Stanford
Logan Verrett    RHP    Baylor
Noe Ramirez     P    CS Fullerton
Levi Michael     SS    UNC
John Stilson     RHP    Texas A&M
Nick Ramirez     1B    CS Fullerton
Zack MacPhee    2B    Arizona St
C.J. Cron    C    Utah
Ryan Wright    2B    Louisville
Brandon Thomas    OF    Ga Tech
Steve Nyisztor    SS    Rutgers
Daniel Bibona    LHP    UC Irvine
Cole Green    RHP    Texas
Steven Maxwell    RHP    TCU
Ben Heath    C    Penn State
Devin Lohman    SS    Long Beach St
Rick Hague    SS    Rice


Minor Leaguers
Tim Collins    LHP    KCR
Steven Parker    3B    OAK
Brandon Beachy    RHP    ATL
Alex Cobb    SP    TAM
Chris Balcom-Miller    SP    BOS
Rubby De La Rosa    RHP    LAD
Anthony Garcia    C/RF    STL
Mike Kickham    LHP    SFO
Mel Rojas Jr.     OF     PIT
Zach Lee    RHP    LAD
Luke Jackson    RHP    TEX
Chad Lewis     3B     OAK
Kris Bryant     3B     TOR
Akeel Morris     P     NYM
Deshun Dixon     OF     TB
Eddie Rosario    OF    MIN
Nathan Roberts    OF    MIN
Kyle Seager    2B    SEA
Yordano Ventura    RHP    KCR
Robinson Yambati    RHP    KCR
James Baldwin    OF    LAD
Austin Reed    RHP    CHC
Ji-Man Choi    1B/C    SEA
Ralston Cash    RHP    LAD
Aaron Altherr    OF    PHI
Kellen Sweeney    3B    TOR
Ryan Brett    2B    TAM
Carlos Perez    LHP    ATL
Enny Romero    LHP    TAM
Ramon Morla    3B    NYM
Todd Glaesmann    OF    TAM
Albert Campos    RHP    COL
Daniel Tillman    RHP    LAA
Addison Reed    RHP    CHA
Matt Miller    RHP    MIL
Robby Rowland    RHP    ARI
Tyler Thornburg    RHP    MIL
Nick Longmire    OF    STL
Cesar Hernandez    2B    PHI
Colton Cain    LHP    PIT
J.D. Martinez  OF   HOU