I'd say that's a pretty good price. I am a half inch taller than you, shorty... haha. 5'8.5" and 30" inseam. I find the bike to be just the right size. Using the stock seat cause, as ReserveBum says, you could spend all of quarantine reading seat reviews. I find the stock seat as comfortable as any even for long days in the saddle. The only thing I haven't added, but want, is the driver's backrest. I find the seat doesn't support good posture. But 3 years in and I still haven't bought one, so that tells you just how bad that problem isn't.
One thing I recommend is to check every single switch to ensure they engage and release. Including the emergency flasher. The switches can get funked up inside and stop working. Shop can fix/clean if they don't work if needed.