What manifold do you plan on running? You can usually find evo3 manifolds for around 70-100 shipped and they flow as much as a ported 2g manifold.
I really dont see the gain in porting the compressor side of the turbo "heavily". I think its a waste of time. You only can open the outlet so far and you really wont gain anything anyways. Maybe port the intake side of the compressor housing... I dont see how it will help such a small turbo spool or get more air in. I guess if your bored, go for it though. Porting the hotside is huge! Gasket match the hotside to the 16g gaskets. Personally, I would look for a 7cm hotside to start with. Your stock 6cm hotside will never flow as much as a 7cm hotside even if its ported. Not to mention, your stock hotside is probably all cracked up. I have a heavily ported 6cm hotside and have changed it out for a 7cm hotside I still have to port. I hate the whole idea of recirculating the wastegate tube. Maybe look into an open dump O2 housing or maybe running an external gate. Gain much more power instead of choking up the exhaust at the o2 housing