Standard airbeds don’t reflect the heat back at all, you just set-up a large circulating air mass that drags your heat into the cold earth.
Thermarest or copy all the way.
WRT Lamps, look for ones that have a diffuse lens or, better still, a large diffuse lens. Unless you like being a raunchy shadow-puppet show for the other campers 😉
A head torch is invaluable, and conversely to the tent light, you want less LEDs – LED lights with loads of weak white LEDs are far less efficient than newer designs with high-power light units.
Does your tent have reflective fibre in the guy-ropes? If not maybe add a few of those scotchlight spoke clips or something like that – tripping over guys is a royal pain in the ass and may break the tent.
As an investment for longer and more adventitious trips I’d definitely consider a Primus stove, plus you don’t need a table for it, just treat the included aluminium reflector and shield well.
Last tip – unseal/deflate your self-inflating mattress as soon as you get out of bed. Don’t forget! Over pressurising [and subsequent de-lamination] due to hot tents in the sun is what kills 99.9% of all of these mattresses!