Can't really beat EOS-M with EF-M 22 mm for portability and aps-c IQ. I paid very little for mine including the 90EX flash (thanks B&H!), and if I were you, I would look on ebay for much cheaper deals from those who got them on sale; they are all practically new.
The 90EX is laughed at, but it's a great optical trigger for off-camera Canon flash. This is the way I use the 90EX, say with off-camera 430EX II with gorilla pod, to create some bona-fide strobist DSLR images. I usually hate kit lenses, but the EF-M 18-55 is crazy good for the money.