Actually a 4mb flash will suffice for me. I will build my own image of the firmware since I don't need that many packages.
That optware thing is for ddwrt I guess. Openwrt has its own repo of packages.
@rajil.s
I have TP-Link MR3020 and WR703N who I manage too use USB tethering with my own OpenWRT firmware.
Small, cheap and USB powered (mini-USB on MR3020 and micro-USB for WR703N)
@v.Na5h
My WR703N is upgraded with 16MB Flash and 64MB RAM. I've bought it here.