Wow a lot of questions!
Ok, lets see if I can help matters
After all your car needs some love and attention!
I take it your flat has windows? Get a bathroom or kitchen tap attachment, and a long enough hose to reach where you clean your car, lower it out of the window, get the missus to power it up and there ya go! .
If for some reason its not possible, you could fit a water butt close by and get it full of water and use a water butt pump to give you a steady stream of water? I used to have the same problem as you as I lived in a flat
Its ok to leave suds on the car as long as its not for too long that they dry out. 5 mins is the "dwell time" I leave Megs HyperWash suds on my GTI then wash off with an open ended hose. Failing that, pre fill some watering cans with the "rose" attachments on the end, they are fine to rinse suds off
After washing then clay, dont use the AG vinyl & rubber until the end of your wash routine. (if using it at all!) I'd try another product, there's a lot better stuff out there. Spray the cloth, not the car.
Dont clay more often than twice a year. Its ok to clay the windows, I do twice a year. I use Zaino Z18 clay and Meguiars Last Touch detailing spray watered down 2:1. AG fast glass is ok for your glass.
Alloys. Get some Meguairs Hot Rims. You can get it from the Internet or from eBay. Water it down at least 1:1 as yout get 2 bottles for the price of 1, and its very strong stuff. A few decent squirts, a couple of mins and your alloys should be nice and clean.
Autosol should be all you need on the exhaust if its been wirewooled to a decent shine.
As for the interior, you wont need to do much to the chrome as its plastic coated pieces. Use a dampened microfibre cloth to give the interior a wipe down, then coat it in something like 303 Protectorant or Poorboys Natural Look Dressing.
You can also use the 303 on the exterior plastic trim and in the engine bay. Great product and prevents sun damage.
As for the seats, you can use a dampened MF cloth on them, and if they are really dirty an all purpose cleaner watered down should do the trick.
As for ED30 products, most of your body parts are the same as my GTI, so here's a few decent products you'd appreciate.
Tyres and exterior rubber parts , Zaino Z16
Clay, Zaino Z18 clay bars
Interior and engine bay, 303 Aerospace Protectorant
Wheels, Megs Hot Rims, or Bilberry Safe Wheel Cleaner, Megs Wheel Brightener (US Gallon size and more expensive)
Bodywork. Z2 and if the budget will stretch to it, ZFX. Z8 as a top up after the weekly wash.
If you prefer a Carnuba wax to a sealant, DODO Supernatural or Zym0l Carbon are pretty good. it depends how much you have to spend.
I've tried a lot of products and IMO Zaino is far easier to use and lasts a lot longer as well as looking a lot better.
HTH
