The Motherboard ist the heart from the computer. It should be choosen correctly because it is one of the most important parts.

Our recommendation is the B450M PRO-VDH MAX because it is cheaper than others but it still offers enough potential to keep it for the next 10 years. You can take everyone from the B450 series but this is in my oppinion the best solution. (My recommentation: MSI B450M PRO-VDH MAX AMD AM4 DDR4 m.2 USB 3.2 Gen 2 HDMI Micro-ATX Motherboard)

In fact you can take every chase you want on the condition that it supports the respective form factor of the Mainboard. In the case of the B450M PRO-VDH MAX the size Micro ATX is needed.(My recommendation : Cooler Master MasterBox Lite 3.1)

The processor is also a very important part from your pc. My personal recommendation is the AMD Ryzen 2600, but if you want you can take everyone from the ryzen 5 series.(My recommentation: AMD YD2600BBAFBOX Prozessor RYZEN5 2600 Socket AM4 3.9Ghz Max Boost, 3,4Ghz Base+19MB)

You can have the best Processor, but with bad RAM it wont be quicker than a 200 $ Pc. In my oppinion, RAM should at last have 3000mhz and i reccoment you to have at least 8 gb.(My recommentation: Crucial Ballistix BL2K8G30C15U4B 3000 MHz, DDR4, DRAM, 16GB (8GB x2), CL15)