Hmm its not a bad deck at all for your level and the fact that you are on a strict budget.
however i feel the underlying problem to be the lack of Damage reducers (DRs) - you have no safeguard in your deck and it is all offensive and that isn't a good thing in survivor. What if you need to stop a nuke without wasting a tonne of pillz? you will also find that your Owen will get stronger with the backing of a DR.
to do that change i would do Dayton to Melvin (although he is double your budget )
and even do a splash card replacement of Tobbie to spaighi
that will increase your streak a little more hopefully.
in the future -
get Miranda to Coby because that will further utilize the mono capabilities of the deck.
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