No I have only brewed 2 NB kits(kolsh and a stout) as they were part of the Christmas present that got me started in brewing
But I'm sure any of the kits from NB would be fine. Midwest is right down the street from my office, so all my stuff comes from them simply because I can pick it up on my home from work which means I haven't bought much from NB because of that. Though if you are ordering online, check out midwest, their prices seem to always be cheaper than NB(atleast when I've compared).
As far as using snow to cool your wort, that works, just don't put the pot in a snowbank. Snow acts as an insulator(reason Igloos keep you warm) and won't cool the wort. best option I used in winter before getting a CFC was to put some water in a rubbermaid bin, put the pot in, and then periodically shovel some snow into the water.
As far as the increased cooling time, you will have that doing either full boil extract or AG as you would have to boil everything to do AG. However, I started brewing in winter, and a got few good, some great, beers using the tub of water with snow cooling technique too, and that was cooling a full 5 gallons(post boil volume) of wort.
The other advantage you have with extract, is the water you use won't affect the final product quite as much(assuming it's water you would drink to start with). PH and the make up of your water can have a much larger effect on your final product with AG as opposed to extract, which is also one less thing to worry about.
Also, check out Yooper's 60min DFH clone recipe on this site if you're looking for a good IPA. Both the extract(with steeping grains) and AG recipes are available for you to try. I've brewed it both ways, and am probably going to stick with extract since they both turned out great, extract is just a much quicker brew. That recipe has a very simple grain bill too and is all about the hops.
https://www.homebrewtalk.com/f69/dogfish-head-60-minute-clone-ag-extract-25709/