Hey Chris...
The suggestions are good mate - have you been able to get the Excel Recipe Designer to work on your Mac yet?
I had a quick play with it and came up with the following if your interested.
Batch Size 20Lts to give it a bit more body (rather than 23L)
Coopers Canadian Blonde kit (1.7kg)
Light DME (700g)
Dextrose (300g)
US-05 at 18 deg
If you can get a big enough pot, do a 5Lt boil as suggested with 500g of the DME. You can borrow my second pot if you need it bro.
Boil for 30min,
10g Nelson Sauvin for 15min
10g NS for 5min
Cool in laundry tub...add to fermenter with kit and rest of dry ingredients, top up with cold water...pitch yeast as close to 18deg as poss. Primary for two weeks.
Stats;
OG - 1.051
FG - 1.012
ABV - 5.5%
IBU - 36
The one thing that I have read and learnt is that you need to be careful with NS as it can be quite an over-bearing flavour if used too much. Some people really like it, others dont. But I think 10g at 15/5min you'd be ok. Could dry hop with a further 10g if you want more aroma...just sample as it ferments to see how it is shaping up.