I'm keen to adopt Quantified Self strategies. It's more important, valuable as you get older.
I bought an Omron 10 blood pressure cuff. It has a USB port and some Windows software. I'm a Mac user. Figuring out how to slurp the measurements is on my to do list. I hope you're considering supporting home health monitors. Glucose monitors, BP, weight, etc.
I've been looking for a passive sleep monitor. The FitBit I own requires me to start and stop the timer. Meh. I've tried the SleepCycle app. Haven't embraced it yet.
Anyway. Good luck. You're doing important work.