Let me tell you what I do know about the P28 chips.
If you are using a JDM P28, then the chips listed for D15B will work fine, but if you are using a USDM P28, they will not, unfortunately.
So that limits your choices quite a bit.
Oh, I also saw your other thread on soldering the ecu board, and all the stock chips are soldered directly to the board. There is no factory honda ecu that I know of that comes socketed. So you will have to solder any ECU you get, unless someone has already done it.
Now, on to your chip choices.
What else have you done to the engine, besides putting in the VTEC head. Also, are you using the 1.5 block or 1.6 block?
You don't really want to raise the redline, unless the engine can take it, otherwise, you may do some damage.
If you want to chat some more about this, PM me. I'll be glad to help you out with your choices.