Got a call form Vision Stream today, asking if alright to come do my fiber install tomorrow. I was told originally someone would come scope the job out and then later a team would come do the actual work. Not from Vision Stream, they want to come and get everything done tomorrow... Figured best I delay this (2 weeks).
I've been wanting to talk to someone about exactly where (and how) the fiber run will go. I've bought a cabinet, CAT6, UPS etc all ready to go. Been holding off on it to make sure there's no issues with where I want to place it and the ONT.
Best to describe my situation via pics.

Aerial view. Red line what I think ideal fiber run would be. Blue X is where POTS originates.

Existing POTS (weird that it's at the back of the property quite far from the street). Not sure if they can use this duct or not. If I pull on it, it seems loose...

Drive looking out to street (Section A). Don't think there'd be an issue running the fiber along this fence and semi bury it - already water mains running down there and visible for a good portion of the run.

Drive (Section B). Not to sure what they'd do here, all concrete.

Retaining wall between Section B & C. This is closest to the road you can get under the house, earlier it's all concrete/garage etc. No access.
Section C is just under the house, nice and easy.

South side of house coming up from under the house.

Easy to run under the decking.

I'd like to run duct up next to down pipe into garage roof. (Probably just another 80mm down pipe.)
There is access to the garage roof, so once the cable/fiber is in there it's easy to run down to a cabinet. I need the duct to garage roof to get from the garage to the rest of the house (under) for CAT6 and other cable runs.
Ideally I'd like the fiber to use the same duct to enter the garage. (Why have a separate one, and holes in the house...) ONT to be installed in the cabinet. IF fiber can be run in POTS duct, would still ideally take this path and duct to garage.
Now that they're wanting to come out and do the job all in one day and not scope the thing first I'm a bit lost. Shall I go ahead put in the duct and cabinet? (Guess I need to for my own cabling anyway, but if needed would do whatever required to accommodate the fiber run - e.g. bend radius)
How does the ETP fit into my plans? What is it's purpose? Should I have this under the decking near my duct going into the roof?
Any advice/thoughts?
EDIT: I'm in Auckland.