It's a good car and you should be able to get a deal on it now that there is more competition in the small SUV market. Also take a look at the Toyota RAV4 and others in that range. Let the dealer know that you are looking at the other vehicles, too.
Check out Edmunds.com to see what the invoice of the vehicle is and if there are any current rebates. Honda do not normally do direct to consumer rebates, but they give allowances to dealers from time to time. Check your local paper for sales advertising the CR-V so you get a feel for the actual selling price range.
Shop for the car near the end of the month when dealers are trying to meet sales quotas.
Have your financing already lined up so you can use that as a bargaining tool. Dealers do not make better deals if you pay cash, in fact, you may be able to get a btter deal on the car if you buy your financing through them as they can make money on this, too.
Always negotiate the full price of the car. Do not negotiate payments. Know what payment you can afford and use online payment calculators with a range of down payments and interest rates so you get a feel for what a payment should be for any given criteria.
If you have a trade and you are ready to buy the car within a week, take your trade to carmax to see what they appraise it at. When the Honda dealer asks if you have a trade, say you don't think so. Only bring the trade into the equasion after you have negotiated the price of the new car. They will give you a low offer on it and you can use the value carmax gave you to negotiate the value of your trade with the new car dealer. If they are within a few hundred dollars of the carmax quote, you are better off trading it in for less money as you will save on tax. Tax is based on the value of the new car minus any trade (down payment does not play into the tax equasion).