Sounds great. I'm sure those plans will keep you plenty busy. Easily the best option for upholstery is a guy in NZ (Grant Donaldson). He isn't expensive and produces excellent skins you can self install. He is highly regarded all around the Corolla world. You will find his details on this site, but yell out if you can't find anything. 

Thanks man, really appreciate it. I'll be directing a lot of future queries your way I'm sure

Hi there new here I’m from hastings vic I don’t have a Toyota yet but searching high and low for the model and body I want there rare as my dad built one when I was younger but his partner at time sold it to the wreckers saying it’s scrap when my dad was in hospital yes you guessed it the illusive ke26 5 door wagon