The gearing on the 630 looks high, like it might be a 44t or so up front, and 11-25t or so in back. This isn't bad if you'll always be in pretty flat places, but if you ever plan to be pulling a kid in a trailer up hills, it's high gearing.
Personally, I'd check your local CL and see if you can find a clean, cared for old (90s) rigid fork MTB - Trek 800/900 series, Specialized Hardrock, etc. You'll have a relaxed posture, and gearing that works in pretty much all noncompetitive situations including hills. Those can be had for $100 or less, and with a tuneup and some deferred maintenance, you can stay under $200 total.