T8 vs T10 makes very little difference. Personally I don't think it is worth the extra cost and certainly not the 6-8 weeks longer to get.
The Swing doors will make it harder to get into, and the windows are made from plexiglass. They will scratch easier, warp over time, and yellow over time. I would stick with the glass sliding doors but that's just me.
The herpstat 2 is a much better thermostat than the VE200 or 300. Herpstats are safer, have more features/capabilities, and overall are a better value for your $$.