Here's a quick rule of thumb that is fairly accurate. The breakeven point for 2005 haste is about 370 intellect (I believe that's the number Myrrar came up with using my spreadsheet with her gear) it varies depending on many different factors). Each point in Crit Rating, Mastery Rating or Spirit is worth about 1/3 Intellect.
So in your case you lose about 180 + (107 + 91 + 303) / 3 = 347 IEP (intellect equivalence points), so you are likely to see equal or better results reforging for the haste breakpoint.
To get results tailored for your gear, you might want to check out my spreadsheet