Ok, I've been tinkering with it for a few days now and have finally got something I'm happy with.
Tank is 600L x 450D x 550H with a rear sump compartment.
Light is an AI Hydra HD26.
Filtration, there's a couple of net bags with about 3 litres of Siporax in the sump compartment, also running an Eheim Ecco pro 130 into the compartment.
I have a CO2 art Pro SE dual stage regulator paired with a Neo in tank diffuser probably going to use an FE although there is a company close by that does CO2 for pubs and hotels.
Hardscape is around 25kg of stonewood from the lovely people at Aquarium Gardens. About 30kg of Tropica Aquarium soil, I also have a 9kg bag of the powder to top it of once I'm sure I'm happy with the Hardscape.
1st picture is taken from roughly the angle I generally sit, 2nd more from the front and slightly above.
I need to think of a name for it now, suggestions will be happily considered.