Yeah you won't get an answer on this from anyone directly involved with Sketchup, whatever they say could be viewed as official policy.

My reading of it is if you aren't using if for commercial gain then the free version is ok. ie: you draw up some plans to work out your space, unless you sell those plans to someone there is no commercial gain. But there are many and varied legal loopholes and strangleholds tied up with all of that.
Sketchup does grant non profit licenses, so if you feel you need to you can contact them directly.

I'm using a 2010 MBP, I'm not having any issues apart from the zoom on the trackpad really slowing down at times, a click on the Zoom Extents button clears it though.

Pop an image up of the sort of thing you want and people will give you a variety of ways to go about it.
As roland says, Artisan is a great tool but can be overkill.

@d12dozr said:

Nicely done, Anita! Did you use the automatic Image trace function, or just trace by hand?

Thanks Marcus. Can't really take the credit though, it was your expert advice that was the starting point! I traced it very quickly by hand 😄

Anita