I play both Uppers and Skeelz a lot in ELO.
The good:
5 Uppers and 3 Skeelz- Yes, that's the correct balance.
Redra- Yes, she is the 2* DR that Uppers need.
Oxen, Rubie, Nellie- Yes, those are the staples in Uppers.
The Questionable:
Greem- how compatible is she with Oxen? Much as I dislike Jay, perhaps Jay would be a better complement to Uppers, especially since your preset doesn't have Chiara.
Burt- He doesn't help you 2HKO. Uppers DR are dead weight against GHEIST.
Frankie Hi- Isn't he worse than Harold in just about every case? And you have plenty of characters to play on 1st.
Danae: Isn't she completely worse than Harold as well?
Verdict:
The problem with the Skeelz complement is that Skeelz don't have too many standout characters against the bad Uppers match ups (GHEIST and All- Stars). The 2 clans have opposite strategies- Uppers win on 2HKO and Skeelz win on gap. I find Vortex to be a much more synergestic complement to Uppers. If you stay with Skeelz, you should have either Chiara or Jay.