Hi Jammie
Just saw your message. My blinds have been installed and I must say the living room ones are heavy. Living room consist of 6 window panels and I installed 2 set of blinds there. For my rooms (3 window panel each), I installed 2 set of blinds for each room too.
1) Perhaps it is better to install 3 sets of blinds instead of 2 for the living room as it is really heavy when you want to pull the blinds up.
2) No problem at all for the bedrooms. The weight is alright.
3) I don't have the details of my blinds but the blind I chose, I think the name is black gold .
4) Psf for mine is around $8 or $9++. Forget how much, I paid a total of $1350 (exclude GST)
5) The pulley, choose gold colour as it will oxidise and then the color will be much nicer
Basically, get those blinds from Vietnam instead of those from Malaysia. And after installation, check all the blinds, you can arrange for replacement if there is any defects / chipped. That's what I did for mine.
My window vendor is Jimmy Textiles and they are very accommodating. When they came measure, install the blinds, to take back some of the blinds for replacement etc, the pesonnel are very punctual. Most importantly, they are very accommodating