These are the guys that are going to finish the job. Ian (left) built the sump filtering system and the tank was from by David WS (right). Measurements and design of the cabinet were undertaken by West . Yep, I took all the measurements. I have to ensure that the holes in the cabinet for the pipes were correctly marked out and that they will fit exactly with the tank sitting comfortably on the cabinet. It was not an easy task considering you have to liaise with the carpenter, the tank maker and finally with the sump filter maker. The order of arrival of the tank, the sump filter and the cabinet must be carefully planned.
I will walk you through what to expect and what was unexpected. Hopefully. The members here can gain some useful information.

I arranged for the tank to arrive first. Reason is that the carpenter must refer to the location of the holes in the tank before he can drill holes in the cabinet precisely at where the inlet and outlet pipes to the tank and sump filter are. Now is also a good time to scrutinise and inspect the tank carefully for cracks or bubble in the silicone. You wouldn't want to take things for granted as once this tank is filled with water; it is going to be a massive job to take it off the stand again and dismantling all the pipes. You will also notice that the tank was placed vertically as this is the correct position to place the tank during storage. In this position, it is also easy to remove all the remnants of excess silicone.

The Tank
For me, the most important thing is that it must be well constructed and safe. I wouldn't want to woken up in the middle of the night by the sound of broken glass. As a rule of thumb by most, any tank of dimension greater than 5ft by 2ft by 2ft will require the glass to be at least 12mm thick.
There are also many type of glass available in the market and prices vary from different manufacturers. Always check to make sure that the glass is not uneven and is not chipped.

Top view of the triangle overflow area.
The diameter for the outflow is 20mm. The diameter for the inflow pipe from the pump is 16mm. The glass thickness for this tank is 12mm all round. The overflow area consist of 7 outlets each 16mm in width. A dark tinted glass is also used for the overflow part. All these small features will cost you slightly more than normal.