I run a lot of these services in my homelab. I didn’t really feel like I had something with real potential until I started using Proxmox as my hypervisor. That’s when things exploded. You can create VMs and containers on it with ease, and all the features I would normally have to rely on command line for were also available on the Proxmox web interface. That is so convenient! Need to do a snapshot because you think you might screw up your install on step 37? No problem, just take care of it in the GUI.
Proxmox also handles clustering really well, which will probably benefit you. You can add a Raspberry Pi or two, or a PC, and Proxmox will just manage them all. It will even move services from one device to another if one device gets turned off. It’s really incredible!
The one thing I wouldn’t build yourself is a NAS. I went with a Synology, and I’m glad I did. Building (and maintaining) one from scratch is just more work than I really have time for. With a NAS, you want things to go perfectly all the time, including updates and security updates, so I’m happy to leave most of the testing and configuration to Synology’s team. I just have to remember to update things periodically, which I’m willing to do.