Help pick WRs and Flex spot pls...Boyd, shepard, kirk, watkins

10 man league, full PPR. Please help deciding WRs/Flex spots…currently have this setup:
WR1: Davante Adams
WR2: Sammy Watkins
Flex: Tyle Boyd
Bench: Christian Kirk and Sterling Shepard as wrs…David Montgomery as Rb
RBs are: Mixon and Aaron Jones

Im ok like this? or ¿Should i get into the lineup Shepard? over who?

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