Your team is absolutely loaded with batters. As another poster mentioned previously, you likely won't be replacing your starters with the reserves very often. Where I may differ personally though is perhaps as opposed to dumping a few reserves, you can attempt to package something together and add another quality starter or closer. If nothing else, in a few weeks, there is guaranteed to be at least one impact fantasy guy go down for a while with injury. If his owner isn't prepared for that, you may be able to overprice someone that you have a viable backup for and grab a top-end pitcher.
Where I notice a particular strength is in your OF. With Kemp, Jennings, Ellsbury, Gardner, Trumbo and even Austin Jackson, though I'm not a fan of his. There are likely owners out there who would offer a fantasy ace in exchange for one of those players and with such a solid backup available for whomever you'd opt to trade, the exchange value may be really high.
Honestly, your hitting is clearly solid, though there's not a ton of pop in the lineup but that being said, it may come down to your pitching. With few opportunities to get saves, you need the starters you have to just pitch lights out all season long. It's not an impossibility, but if I were you, I'd feel much better about it with one more solid--top arm in the lineup.
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