Dude, don't you have a Hellion there? What are you specifically unhappy/unsatisfied with?
If you want fat but low output... you can try to get 10k but spec for a weaker magnet, maybe Alnico 2...
Problem is, the weaker the magnet, the less highs it has, so it tends to mud up quickly with the higher winding. That's why those heavily overwound pickups use Alnico 5. Alnico 2s usually hit 9k on the winds and that's about it, on to the next strong magnet e.g. A3, A8, etc etc.
I'd suggest you try HighOrder pickups. Email the fella there for recommendations - he will talk you thru and he did an amazing job on my order. He makes a nice handwound (where I believe the magic is) pup for the price of a Dimarzio.
You'd also want to take into consideration how your RG sounds like in the first place. Listen carefully to the acoustics - is the sound thin-ish or does it have the potential for fatter sounds. If you like the EQ of your guitar, or the feel... or look... and you don't want to change the guitar, you can consider getting a brass trem block for the Edge Pro. Or swap it for a nice Edge/Lo-Pro Edge. I'd recommend a new guitar.