What sort of battery life are you seeing with that use?I too struggled with the 2.0/2.4 Upgrade. After much consideration I went for 2.0/16/512 and have been very happy with my choice. and IMO, your money is much better spent on 16GB RAM or more SSD Storage.
For context, my daily usage consists of Chrome (15-20 Tabs), Chrome Remote Desktop, Windows 10 x64 VM, Spotify, Messages, Slack, Mail, Tweetbot, Terminal and some word processing.