Can't really speak as to the UV/heat from the glass roof. I know I saw the specs somewhere (which I can't find) that said what amount of tint it is and how much UV it blocks.
It looked pretty reasonable - but what that is like in real life - I couldn't say.
Regarding range... We have had ours 3 months and the only long(ish) trip was Auckland- Tauranga and return.
Its the std range with 455km WLTP and car shows 435km when charged.
2 Adults and 2 children (and all their junk).
We covered around 230 km and it should 160km remaining when we got there (230 + 160 = 390km range).
Return trip had a diversion and was around 285km and showed a bit over 90km left when I pulled into our garage. (285+90 = 375km range).
Gavin Shoebridge on the NZ youtube ecotricity channel reckoned to take 15% off the WLTP claimed range to get a more realistic figure - So 85% of 455km is 386km - probably pretty accurate.