What speeds are normally done on the roads you would be riding it on? Up to 50-60km/h you would be ok with 50cc, if traffic normally flows faster than that then get a larger displacement bike/scooter. Bikes are a more enjoyable method of transport than your average car but it’s noticeably less fun (and more dangerous) if you can’t at least keep up with traffic.
Make sure to allocate some money for protective gear as well as a bike. If you’re sensible bikes are nowhere near as dangerous as some people like to make out but if something does go wrong some proper bike gear does make a big difference.
I like a properly fast boot time, but a couple of minutes is tolerable. Much more than that and it feels annoyingly slow.
What is truly annoying though is when I have to do something that should be quick but requires booting a computer on my work’s network. I got back into the office once and literally had to wait 20 minutes when all I wanted to do was to print out one jolly document and go home - I guarantee you I cared about boot time that day…