DIY - Can you do it?
Several years ago I knew very little about HiFi systems.
NOW...I can assemble amplifier, preamplifier, and power supply boards into cases. I can assemble RCA, mini XLR, and speaker cables. I can assemble speakers from scratch.
ALSO...I can make my own cases, speaker cabinets, speaker stands...
If someone like me with almost zero electronics and carpentry skills can do it, then you probably can too.
This is the MOST important thing you have to remember. Electricity CAN kill you.