HD video edit on MacMini

Hi, can I edit HD 1080i/p video in AVCHD on MacMini - i5 2,3 GHz, 500 GB, 2GB RAM, Intel HD Graphics 3000 in iMovie? Will it be stable and useable? I need it for home use only so do not mind about waiting to render/ compile DVD etc. I might need to upgreade RAM to 4 or 8GB, but is the CPU & GPU good enough? Thank you!