Freetrade,
With these numbers, I believe that Memorycoin 2.0 is NOT GPU resistant.
The R280x GPU can mine 22 HPM with a price at around $420.
That is around $20 per H/m. That is way too profitable for GPUs as opposed to CPUs.
The H/m equipment cost should be around $150 per H/m for CPU miners.
This is a big problem and I hope that you can correct this matter, either by forking MMC by using a new, more GPU resistant algorithm when starting Memorycoin 3.0.
If you already have the GPUs, you'll certainly want to use them.
The aim here is to make it unprofitable for people to go into business (with large GPU capital cost) because they'll be competing against a wide range of CPUs that have no capital cost (because they have already been purchased). Eventually the price of MemoryCoin should be the same as the electricity required to mine it. There's a window at the moment for profit, (because the knowledge is not widespread yet, and there is significant appreciation potential), but long term, things are working out exactly as intended.