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Looks good, I don't bother with mad hop additions like that anymore, podcasts have educated me to first wort (allegedly smoother bittering in profile), late and or dry hopping admittedly it takes a bit more hops on the last 2 to get the same bang for your buck tho.
Hope your hops are last season as cascade ages very quickly
First wort, is when you throw them in before it reaches the boil, havent tried doing it yet.
First wort goes into the sparge before boil to smooth out the bitterness. Done it a few times and it's worked well.
Like Ciderhead said, go with late hop additions and make them larger. They give less bitterness then and more flavour. I'd go with 10g at 60, then 20 @ 10 and 30 at flameout if I was doing it. Then if you really want some extra bang, throw the last 40g in as dry hop for 5 days after primary fermentation.
You might be interested in taking a look at my previous cascade SMaSH, could be some ideas there for you to work with, as it has a similar ABV and IBUs as your own recipe - http://www.nationalhomebrewclub.ie/forum/index.php/topic,8884.msg110869.html#msg110869
QuoteI've 100g of cascade , I was planning on using the whole 100g but it seems the IBU's would be off the chank so I've dialled it back.
I would certainly use the whole 100g, even if you were to use a portion for dry hopping as molc suggests, it will give a nice kick to the flavour.
QuoteI'm not sure on the right amount of grain and the logic of doing so many small hop additions, maybe combine them into 2 bigger ones?
The amount of grain you use will depend on the target ABV you're looking for, an est. ABV of 4.3 would make a lovely drinkable beer, but depends on your own taste.
As for the timing of the hop additions, +1 on what others have said here, not a lot to be gained by doing frequent small additions IMHO, particularly with anything more than 20-15 minutes left on the boil, as a lot of the hop flavour and aroma will be boiled off.
QuoteWith hop addition times is it meant to be after x mins of boiling or with x mins to go in the boil?
Boil timings are usually listed in the form of a countdown, with x mins to go in the boil. For example, if you had a 15 minute hop addition (Boil 15 min), you would add it 15mins before you turned of the heat and began cooling the wort.
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