uk grower 1st grow - grow room set up advice

Hi I am new to growing and am looking for some advice on my set up to see if it is possible to improve it, all suggestionswelcome and thanks in advance for your time.

My tent is a 1.2m x 1.2m x 2m tent with a 600wHPS.

I have two 6" carbon filters 500mm long inside the tent connected to a Y piece with a 6" extractor fan (600m3/hr).

The fan is mounted inside a sound box made from 25mm MDF wood filled with non-combustible loft insulation. My box is hung from the ceiling using bungees and I have covered my ducting in insulation, wrapped it tight with a thick plastic bag and fastened with duct tape.

As part of the exhaust I have two ona duct kits with 1 ltr pots of ona and exhaust outside my home.

I have a 4" air intake fan (286m3/hr) also mounted inside a sound box made from 25mm MDF wood filled with non-combustible insulation hung from bungee cords.

Both fans are connected to a temperature & twin fan control with a setting of 25degrees.

I have already had to stop my previous grow due to the sound keeping me upall night and wanted to be over cautious to make sure the neighbours do not suspect a thing with sound or smell.

A bit long winded but please feel free to ask any questions if I have missedanything.

sounds good to go to me mate
if you find its still abit noisy just use one carbon filter in your tent to suck the air thru then use the other on the other end as a muffler , you dont really need a intake fan with a tent that size , your outlet fan will be good enough to cause negative pressure in your tent and pull fresh air into the tent ... im uk aswell mate so anything you need to know give me a shout

great stuff, good to know support is availble from the UK. I'm sure I'll encounter some probs on the way so I'll be sure to give you a shout, many thanks