Just a quick piece of advice regarding scarification. January is just way to late to do this. Generally one would apply this process late October (depending on the start of the season) into early November. January is really far too late and the lawn doesn't get the opportunity to recover enough in that short time frame.
Cheers, BB.
I live a 24 Hour lifestyle, but every now and again I seem to fall asleep, well at least that's what my wife tells me.