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#11
It's what I do and yes you can live with 120+gb with ease and actually even a 64gb could work but you can get a great 128 Crucial M4 SSD for under $130.00
SAMSUNG MZ-7PD128BW - Newegg.com
Crucial CT128M4SSD1 m4 128GB SATA 6Gb/s 2.5 Solid State Drive - 128GB, SATA, 6Gb/s, 7mm, 2.5 at TigerDirect.com
Vantec NexStar CX SuperSpeed 2.5" SATA to USB 3.0 External Hard Drive/SSD Enclosure (Supports 7mm, 9.5mm, 12.5mm HDD/SSD) - Model NST-200S3-BK - Newegg.com
Moving to a SSD will rock your world and with a larger SD card you can have the best of all worlds in a truly mobile platform and then when you need massive storage you have the USB external drive or go the cloud and use the drive for a additional back up device.