Agressive Rear Pad for Front BBK

Looking for recomendations of how aggressive I should go with the rear pads to try to balance out the front BBK.  I put the BBK kit on so I could save some money on pads.  I was burning through front track pads like crazy and it was costing too much.  Below is my current setup.  

350z HR

Front: 6 pot 18Z calipers and 355 rotors with an FF pad in it (these are huge, they came off of a cayenne turbo S) Lets not talk about the pads bc people will give me crap.  They are bosch, they are cheap, they hold up to track abuse somehow and last forever

Rear: OEM 2 pot (40mm) with a GG EBC orangestuff pad in it

Issue now is the brakes are super front biased.  I am working on a bracket to fit rear 4 pots to the rear.  That won't get done for a while.  In the meantime how agressive do I go?  GG isn't enough so that leaves race pads

options: G-loc R10, R12, R16?  These are relatively cheap and I hear have very high torque.

Thoughts on all this?  Any brake gurus out there looking to help out a poor VQ track rat like me?

Well, race pads won't do much until they're hot, and you might not be able to get them hot since you're fronts are doing such a large percentage of the work.

Now that you've got huge front rotors for heat management and huge front calipers for clamp force, maybe there's a durable EE pad for the front?

In reply to AngryCorvair (Forum Supporter) :

The rears get pretty hot.  Hotter than the fronts now.  Depending  on the track my rotor temp paint puts it between 900-1300F

I came in to say R12's. They have an aggressive initial bite but very linear. I think I prefer the porterfields because they're a softer bite so for this application it might be a good option. 

In reply to bobzilla :

Which Porterfields are you referring too? That strong initial bite of an aggressive track pad was what I was worried may upset the chassis in a not 100% straight braking application