2GB is a 50% addition to the memory space on your player. And it will hold a sizable amount of music. Note too, that if you use Rockbox alternative firmware, you aren’t limited to the 2GB SD cards; you can use the SDHC format up to the current behemoth 32GB card.
You may want to check you ID3 tags for proper format and eliminate any extraneous information that is sometimes loaded in the Comments field. This can slow down the database refresh. There’s no way a 2GB card (even fully loaded and with a full internal memory) should trigger an 8 minute refresh. It should only be 3 - 4 minutes tops.
It’s really not that inconvenient.