I liked your post, then I remembered when I took a couple of us more mature ladies
to Neilston.
The ladies really wanted to go on a certain day, I did not have time for a reccie.
The best route I could find - it looked not too bad walking it on Google maps - was Pollock park, up Kennishead road, turn right then left at the new Persimmon homes, then on a main road a short bit (Barrhead road, I think), through a park with a church.
Cross at pedestrian crossing avoiding the scary roundabout into another park with a stream running through it, then up to Neilston following the cycle route.
Bloody hell!
They tried to run us over on Kennishead road.
The mile or so we did on Barrhead road was scary, I could see it becoming scarier after the roundabout that we avoided by going through the park.
On the way back we used the pavement to the Persimmon homes.
Then we turned left into another very busy street leading to Paisley.
That area (around the new Persimmon homes) whatever it's called, is not safe for cycling if you're not fast and nimble.
Shame, because it borders the Dams of Darnley country park.
It's a nice cycle up there, but to get to the path you take your life in your hands.