OK, Greg, I will give it a shot from my perch in Guatemala City, though I will apologize in advance for not knowing the regular positions for many of these players. My first choice for each is in bold face.
C-Zach Deutscher '11, Dan Casas '93, Tony Sanchez '12, Dan Gooris '72, Gary Paulson '88, Scott Paulson '84. Deutscher was a force at the plate as well as behind it for four years. Casas played for two years and Sanchez for just one, but both had remarkable numbers. The Paulsons each put up big offensive numbers but I can't speak to their defense. Gooris hit .404 one season in the wood-bat era.
1B- Steve Zetterlund '87, Craig King '92, Ken Pittman '83. All had great career numbers, especially Zetterlund. who hit .431 with 32 HR and 147 RBIs, and King, who had a .422 career BA with 23 home runs and 124 RBIs -- and both players amassed those numbers in three seasons. Pittman was a superb fielder.
2B- Keith McDonald '72, Mike Coduto '14, Paul Biocic '85, Rich Pietrolaj '97. Here's where I will need some help with positions, because I am not sure where in the infield McDonald, Biocic, and Pietrolaj played. McDonald hit .455 and .441 his first two years and was an NAIA All-American in 1971. Coduto was an outstanding fielder and a good offensive player, while Biocic was a speed merchant with 97 SBs.
SS- Randy Ross '84. Case closed on this one. But the Vikings have had other fine shortstops, such as Nick Marino '10 and Eric Sousanes '14.
3B- Angel Carrasco '11 probably flew under most people's radar screen, but he was a very good defensive player, a solid hitter, and a quiet team leader. Brady Josephson '08 and Chris Nelson '92 are also worth mentioning, both very solid players with a very deep understanding of the game.
OF- Mark Slager '84, Pete Balis '86, and Zak Worsley '15, plus Kevin Krawczyk '90 and Andy Athans '11. A number of other players didn't start as many years (e.g., Wade Yunker '11, Tommy Endres '14, Dion Rubino '03) but were also very good at the plate and in the field.
UTL- Trevor Popp '11. He could play just about anywhere and was one of the most disruptive players at the plate and on the bases as I have ever seen. I'll include Anthony D'Andrea here, too, but he's my choice for closer (see below).
SP- Dan Mason '83, Mike Giovenco '10, Nick Soldano '14, Pete Zajac '87, and Steve Kuligowski '12. Honorable mentions are John Van Kempen '85, Alan Keller '83, Bernie Greene '66, Jeff Hanson '04, and Tim Dykes '99.
RP- Anthony D'Andrea '90, who was also an excellent offensive player (career .393, 26 HR, 162 RBIs) to go along with his 14 career saves.
Coach- Luke Johnson