I was about to launch into a rant about gadget creep and overkill on a small boat, but
@JBP-PA nailed it with the suggestion of a good phone app. Typhoons are excellent pocket cruisers with a full shoal keel, so you really don’t need a depth finder. If you touch bottom, you’re usually shallow enough to step out and push. Navigation apps already show depth, and unless you regularly sail more than two miles offshore, a cellphone will tell you where you are and what’s below you. Even then, I’d recommend a cell booster before investing heavily in Garmin gear.
I’ve fully restored seven very neglected sailboats, and on the early ones I went all‑in on electrical upgrades. The return wasn’t worth the effort. I sailed after dark only a handful of times, so traditional nav lights saw little use—battery‑powered clip‑on nav. lights are fine. Cabin dome lights were never where I needed them, so LED puck lights placed where you actually want light work better. And a masthead anchor light is nearly useless in fog; hanging an LED camping light from the boom is far more visible and doubles as a cockpit light at anchor.