Trying to optimise my sleep setup

Hey, so I'm planning to start the AT in mid to late March. I do have the budget to be able to spend more on gear but I'm not looking to waste money. I have large sizes as I am 6"4, so need the length.

My current gear: Sleeping bag - Alpkit Pipedream 400 long, comfort rated to -4C/24F, weight 852g/30oz

Mat - Therm-a-Rest Neoair Xlite large, R4.5, weight 510g/18oz

Pillow - Mountain Equipment Aerostat Pillow, weight 53g/1.9oz

Neoair repair kit, weight 11g/0.4oz

FLEXTAILGEAR Mini Pump, weight 52g/1.8oz

Total weight 1478g/52oz

My total base weight is shaping up to be a little under 7kg but it's always good to shed some weight. One thought I had was wether to switch to a Quilt. I have noticed that the quilts often have a worse temperature rating but I feel I could still save weight on my sleeping bag/quilt. What are people's experience of them?