You're hit capped (17% total, can be a combination of +Hit from gear and +Hit from talents and raid buffs - Draenei aura 1%, Spriest 3%, Moonkin Imp. FF) and any hit over 17% will give 0 dps. So currently the badge trinkets will be a loss of dps in comparison to your current ones, and I would not suggest the SP/Mp5 frost trinket.
T10 gear would be the safest purchase with frosts, the 2pc T10 is worth breaking 4pc T9 for and the 4pc T10 no longer has an internal cool down which makes it very desirable.
http://elitistjerks.com/f80/t38033-m.../#Introduction has helpful information regarding stat prioritization and scaling, and to some extent gear to aim for.
Jalousie: Two ovaries walk into a bar.
"Hey, can we get some cervix over here?"