WD20EARS just added on the official HCL - mistake and issues

OK, I'm officially worried about the life expectancy of my WD20EARS. Here are the SMART readings:

DISK 1
Raw Read Error Rate 0
Spin Up Time 8550
Start Stop Count 12
Reallocated Sector Count 0
Seek Error Rate 0
Power On Hours 106
Spin Retry Count 0
Calibration Retry Count 0
Power Cycle Count 10
Power-Off Retract Count 9
Load Cycle Count 1978
Temperature Celsius 43
Reallocated Event Count 0
Current Pending Sector 0
Offline Uncorrectable 0
UDMA CRC Error Count 0
Multi Zone Error Rate 0
ATA Error Count 0

DISK2
Raw Read Error Rate 0
Spin Up Time 9108
Start Stop Count 14
Reallocated Sector Count 0
Seek Error Rate 0
Power On Hours 117
Spin Retry Count 0
Calibration Retry Count 0
Power Cycle Count 12
Power-Off Retract Count 11
Load Cycle Count 2255
Temperature Celsius 43
Reallocated Event Count 0
Current Pending Sector 0
Offline Uncorrectable 0
UDMA CRC Error Count 0
Multi Zone Error Rate 0
ATA Error Count 36


Load Cycle Count seems a touch higher than I would expect. If the general rule of thumb for LCC is ~300,00 before the hard drive begins to fail, and I have my ReadyNAS DUO on 24 hours a day, then according to my calculations, the WD20EARS would last about 1.7 years. I'm not sure if I want to use wdidle3.exe to disable the timer as others have tried with mixed results. Should I start looking for new drives now? Hopefully RAIDiator updates could fix this problem.