Careful at Michaels! The ones I've been in are horrifically overpriced without the 40% coupon, which then just brings them down to normal pricing. Shopping online may be your best bet. Sprue Brothers and Squadrons are some of the better online stores. Luckymodel is another.
IMHO a Blackhawk would be jumping in the deep end. Try finding an older Tamiya aircraft kit, they are simpler, cheap, but still fit nicely together. That way you can get your feet wet without fear of drowning! Or try the Tamiya P-47D Bubble Top Thunderbolt, which just about falls together. It's a bit more expensive, but is one of the best engineered kits around. It's a good confidence booster, as it's an "adult" kit with lots of pieces, and yet is easy to build into a nice model.