Looking for a case for my new build. Need room for 6x 3.5 inch drives

[TJTex]

I am building a new system and I can't find a case that will work for me.  My current system is over 10 years old and I have 6x 3.5 inch drives that I will need to move over to the new build but I can't find a case that will work.  Every last one of the cases I have looked at have only 2x or 3x 3.5 inch drive bays and I can't find any accessory drive bays to add to the case.

My old tower had room for the 6 drives but I need to keep my old system running while I am building my new one.  Also that case has mesh front and side panels that provide for plenty of airflow. 

 

Here is what I would like:

- A case with drive bays for 6x 3.5 inch drives or a case where you can add drive bays in order to get up to the 6 drives I need.

- Mid Tower Case 21 inch high (542mm) I might settle for a 18.7 inch case (475mm) if there was enough room inside for what I want to do.

- Mesh (not tempered glass) especially on the front of the case.

- Room for a closed loop processor cooler with a  radiator mounted on the inside top of the case

- USB 3.1, 3.2 and 2.0 connections available on the front or top or side of the case.  I suppose I could use an external USB 2.0 Hub but that takes up desk space

- One or multiple 5.25 Inch bays usable for either internal ODDs and/or USB connector and status panels.

- RGB that works with Gigabyte Motherboards.  Or an accessory that will give me the RGB that will work with Gigabyte.

 

Here is what I plan on building:

Gigabyte Aorus Master Z390 Motherboard

Intel i9-9900k

Samsung 970 EVO Plus pcie 1GB SSD running as pcie 4x

Gigabyte GTX 1660 Super graphics card

Thermaltake Floe Riing RGB 240 TT Premium 240mm RGB Water Cooling Kit or a 360mm kit

Crucial Ballistix 32GB - DDR4-3200

 

I kind of like the Level 20 RS ARGB Mid Tower Chassis or the  Commander G33 TG ARGB Mid-Tower Chassis but I don’t see how I can expand the number of 3.5 inch drive bays to accommodate the 6 drives.  I know these don’t have 5.25 inch drive bays but that is a trade-off I can make.

 

Does anyone have any suggestions for a case especially about how to add drive bays to get to the 6x 3.5 inch drives?