you're usually better off doing the receiver/speakers. it gives you a lot more options, and way more flexibility to upgrade.
i've been out of the market for a while, so not to sure about any good deals out there currently. sorry.
i will say, do NOT rush the choice for speakers. even if you pick the perfect receiver, you won't have it for decades, it just won't last that long before being obsolete. speakers on the other hand definitely can last you 20+yrs easy. i'm not saying speakers are more important than the receiver, they both have their roles, but because speakers tend to 'stay current' for much longer, you have more to gain by getting it right the first time.
speakers also have a huge markup, like ~80%, so salepeople are always willing to negotiate on prices. it's usually a better choice to take your time deciding and rely on haggling to get a good deal on speakers. boxing day, or other sales is a good chance to get receivers cheap though, so that might be a good thing to focus on this week. unless some speakers sell out, you should be able to get good prices on them next week, or the week after, or halfway through feb...