Here is what my base lineup for the rest of the season would be..
1. Altuve - 2B
2. Lowrie - SS
3. Wallace - 1B
4. Martinez - LF
5. Johnson -3B
6. Moore - RF
7. Castro - C
8. Schafer - CF
9. Pitcher
My bench would be Bogusevic, Barnes, Marwin, Bixler, Snyder.
I would either demote or cut Downs. I would send Dominguez to AAA to finish the season.
Barnes would get starts in CF and RF based on the pitcher. Bogusevic would only be a defensive sub and pinch hitter the rest of the season. He's had his chance to prove himself. I think he could be valuable as a PH though. Snyder would be on my watch list for cuts with Landon Powell on my ready to call up list. At this point I leave Fernando Martinez in AAA until September call ups. I would also switch Wallace and Johnson at 3rd/1st base every three games to see what they can both do.