Sounds good, if the price is right & you can use your current rig.
Network hashing rate is just now above the previous high (currently 28.070 Thash/s). I need to see 100 Thash/s from ASIC's before thinking "ASIC's are here". That could occur in 2 weeks or 2 months. Many were posting the imminent death of GPU's 6 months ago.