Same here. I allways go for the upgrade the planets pop first as not doing so will cost credits. Then build extractors as these are relitively cheap, and having the reasorces extracted is a heap cheaper than buying it.
Keeping an eye on the tax rate ( trying to keep that tax rate from going into the red) on my planets. I'll try to tech up to get the trade ports into play, then invest in some logistical slots and build 1 tradeport in all GW's possible, either with a SB with trade upgrade or trade port. This will really get the creds flowing.Then do the same with refineries, although I don't think it is neccasary to build them in all GW's. I'll try to build them in GW's rich in resources that I'm most lacking. With Vasari however It can be I believe, sometimes more advantagous to tech up and build refineries first, particularly if you have lots of resources, as you need less teching to get it available.
Well thats what I try to do, every game is different though. If your getting attacked heavilly from the get go, your deffences and fleets need to get far more attention.