I've started typing a response to this 5 times now and keep having second thoughts on whether to post. (this is a licensed car after all, and people seem to love 'real data', so...)
I'll just point out that a rear wing has leverage behind the rear axle and will produce front lift (in comparison to no wing; I'm not suggesting a rear wing necessitates net front lift

). Also sedan shaped cars don't produce a lot of net downforce even with a spoiler, splitter, and rear wing. All but the more extreme racing modifications are about reducing lift rather than gaining net downforce.
Having said that, I'm not sure about the aero balance on this one. Tyre load balance goes a long way rearwards.