@Vonkins,
It's quick wash because you wet the broken up cannabis, shake it a few times to get the most contact between the cannabis and ethanol and then you filter it, quickly.
If you let it dwell too long the alcohol will pull extra wax and chlorophyll and the chlorophyll oxidizes from bright green to do-do brown quickly and it will make your oil dark, which is fine, but people are obsessed with amber oil.
Plus if you "steep" your extract you go from making QW (ISO) or (ET) to RSO (Rick Simpson Oil), which is not vaped.
No, the dry ice is not necessary, though I am sure others will disagree.
To be honest it depends on whether the end product is for personal use or for sale, because people seem obsessed with duplicating oil that looks like CO2 processed oil and realistically you aren't going to get that with $100 in general kit.
Just freeze everything, the ethanol, the cannabis, the jars, anything that you will be using in the initial extraction process. Let them freeze for at least a day or two.
Use the time while they are freezing to do dry runs of the process so you can do it smoothly when the time comes.
When the alcohol is super cold it will be a little thicker but still liquid and it will take forever to go through filter paper, so I would also suggest getting a Buchner funnel, a filtering flask, some filter paper, and a hand operated vacuum pump to quickly filter your extract.
They don't need to be big or overly complicated, a cheap $10 porcelain funnel, a 500ml $15 filter flask, a proper stopper (probably the hardest part to find, unless you just get a neoprene one), and a $35 hand vacuum pump is all you need.
There are a lot of options for the vacuum portion other than a hand pump, but this is the simplest.
As far as winterizing, most people don't have access to freezers that get cold enough to make winterizing possible.
As far as evaporating the alcohol, quicker is better and outside is best.
If you do this in a room....I wouldn't suggest doing this indoors.
Using this process you could do it 1,000 times without a problem but when it goes bad it goes bad fast and you won't have time to react and it plays for keeps.
Again, I am not sure what you are working with, but here is a link to a video by Rick Simpson that shows his process. Disregard the washing part, because this is how he does it for RSO, which is meant to be eaten.
The processing after the washing is what you are looking for.
Also I would get a rice cooker with an untreated stainless steel "crock" rather then the typical aluminum teflon coated jobbies. Teflon is nice, but teflon and heat, not so nice.
Please also keep in mind that alcohol extraction using this method is not only crazy dangerous, but it is also highly illegal without a permit, if where you live even allows permits for such a thing.
Most areas don't.
So if you process your oil this way, you are doing so at your own risk.
Always decarb.
Atomizer coils have such short contact with the oil that they don't decarb efficiently.
This is dependent on you vape rig because some get quite hot and have huge coils while others have hair thin coils.
If you have a variable voltage battery, set it to the lower side (3.0-3.5V) and vape with as low a voltage as possible to ensure the battery isn't frying your THC.