Week 10! Need help! Romo or Favre?

I have a few and if anyone can help me out Id be very grateful. Vikings are playing Detroit so that has thrown me off. Should I start Nick Folk(k, dal) against GB, or Ryan Long(K MN)? For TE I have Brent Celek or Visanthe Shiancoe. who of those two? Romo is hot but facing a tougher p defense then Favre. This week has me all screwed up. If any of you can help, it'd be truly appreciated and thank you again! My plan thus far was to stick with Romo, start Celek, and start Ryan Long...but I am VERY unsure! TY!