I built this with a low-medium budget. It was to replace an everyday computer for basic office work, internet, etc.
The SSD is worth the money. Crazy fast boot/load times. It may be worth it to go slightly larger. I have mine already 50% filled just with OS and programs (including Steam games). Media is on the standard hard drive.
This case was budget. I needed to order a 2.5" to 3.5" adapter bracket because there were no 2.5" slots. This wasn't a problem and actually gives space around the SSD and hd which may increase airflow.
I added a blue LED light strip to the inside of the case. I ordered it online from eBay. It is powered by a 4-pin molex connector.
I plan to upgrade the RAM to 8GB soon, although it hasn't been needed yet.