Doing a multi-city trip.
I'm CO Plat and UA 1K.
I purchased it on CO.com to get double miles on my Chase One Pass plus card and used my CO Plat #.

I have 4 CO 2010 SWUs which I never used yet. No UA Swu's or CRs.

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I still have til tomorrow 5pm or so to cancel. Basically I want best odds of getting First or Biz on the longer portions.

I have the 4 SWUs on CO but would probably have to use miles on UA and I think I can't use them on codeshare, but not sure how the complimentary upgrades work.

Thanks for the help!