So I just took the plunge and got a great deal on an 8GB 13” MBA with an i7. There’s one compromise - it only has 128GB of on board storage. I accepted this due to the presence of the SD card slot on the 2017 model. So I’m wondering how best to manage this situation. Are there any caveats to keeping photos, music, games and iPhone backups on an SD card? If I decide that life with an SD card is too much hassle, can I take the MBA to the Apple Store or an authorized repair shop to upgrade the SSD **and** keep my warranty intact?