Okiedokie - time for an update !
It's still very much "work in progress and watch this space" (as all planted tanks probably are) but this is what I've done in the past few weeks.
This is nowhere close to the aquascape I actually have in mind.
A few months down the line when things settle and the tank finds some balance, I will start leaning towards a "nature" look - yet to be decided exactly what, but I have plenty of time
The transition went very well, but it was back breaking and very hard work.
Especially as the tank is on a high chest of drawers.
The Dennerle black quartz wasn't exactly cheap, but I like it a lot. I was surprised at how much lighter it is than sand.
I tried to build it up towards the back of the tank, but that might not be that easy to see in the photos.
I still have plenty left and have used some for my little fry tank as well.
I ordered the plants from Greenline and I'm well aware that some of these are best suited to floating as opposed to anchored.
This is some of what's in the tank - but there's plenty more I'm not sure of, as I also ordered a £5 lot of "quick grow" plants - so not really had time to check out and look up what they are.
M.pteropusWindelov
Heteranthera zosterifolia
Sagittaria natans
Bacopa Caroliniana
Ceratophyllum demersum
Mayaca-fluviatilis
The bogwood I know is unsuitable and doesn't help to create any balance whatsoever - but for now (and until I can find a suitable alternative) it acts as a "sofa" for the Farlowella.
Internal filter replaced, and now have over filtrated external Eheim 2213.
I am completely open to any criticism

because whichever way, I will take it as constructive.
Photos in order:
1 - rip everything out !
2 - place fish in bucket
3 - clean tank and add Rena 15W heater cable & Laterite First Layer 1.5kg
4 - add Dennerle black quartz 2 - 3mm
5 - add water
6 - add plants