Wow,that bundle on evilbay isn't go to stay that price for long,if yours is up and running with all systems go i'd say its got to be worth £150-£200 esp someone starting out.
Big question about SIP,why go from good stuff like this to the rubbish they bought out later on:dontknow:
Whats the big
Have you priced up all the panels you need,are you going to get them? I would if me;), if not,you're going to have source some sheet and fab them up
Why the want for the best wire if you're putting new panels in most of your welding can be plugs welds you've really no need for...