Add another safety school?

[ans123]

I've been applying to schools for fall 2018 admission into statistics master's programs with a focus on environmental statistics. I've nearly decided all the schools I will apply to but am trying to add one more. I've tried to apply to a bunch of schools across the spectrum of program rankings and was wondering if anyone could help me decide if I should add one more safety program or a more middle of the pack program given my profile and schools I've applied to. 

GRE: 162 quant, 162 verbal, 5 writing

GPA: 3.30/4.0

Undergrad majors in economics and statistics

Schools I've applied to: 

Berkeley

Oregon State

UC Davis

UCLA

U Michigan

Colorado State

Considering: U Washington, U Chicago, U Colorado Denver, another safety school? 

Edited December 24, 2017 by ans123
Rephrase question