Nice piece of kit.
Rather than going with a heavier pack, with your gear and the packing system you obviously have I would be looking at a smaller and lighter pack.
Being that you are used to a larger volume pack with UL gear, you would probably not care for the CDT or Prophet. They would restrict and force you to go smaller on your gear. It will take a few trips to get comfortable with either.
I would consider a 3200ci pack, around 1#. Depending on your trip length, this will work for most trips up to about 5 days with no restrictions. If you want to go for longer trips, a week or more, you can go back to the Pinnacle for the extra space in food you will need. Typically, you will end up with a stable of packs, large and small. A single pack to cover a single set of circumstances will not work for everything...count on it. Downsizing in steps will be much more comfortable. Also,
with your gear and obvious experience, you undoubtedly have a "spot" for most things. Checking features and pocket arrangements is a must. This really threw me about 25 years back. I went from a Kelty with lots of pockets to a UL internally framed pack (magnesium) with only 2. It seemed messy to throw stuff in bags and into a pack.
The GG Gorilla doesn't offer any real weight savings. But, it does provide some internal frame for carrying. If you have some trouble with loads, this is a good pack. The Mariposa is almost the same but has a larger volume. Both are heavier packs and are somewhat larger than stated. GG is no longer offering the Miniposa. Have you looked at a G4? It is a larger pack, but quite light at ~16oz.
The Ohm is a bit heavier and again offers no real weight savings. I don't have it, but I have heard good things about it as far as load carrying. But, that is VERY subjective.
Soo, sticking with a quite arbitrary set of parameters:
The Prophet barely fits, but is also very expensive after figuring in options and weight of options.
The Swift falls into the same category and looks to handle loads better. Options add weight and expense.
The Exodus is a short compromise in size from the Pinnacle. Again, options add weight and expense.
Depending on what you are prepared to accept, in terms of size, I would offer the Prophet as being about the best solution for a light pack. This will allow shorter 3season trips with no problems. Again, the Pinnicle could be used for longer trips. This is assuming you have no problems with loads up to 25#. I don't have it, but have heard nothing bad about it.
If you are very serious about getting your gear size down, you could drop to another category, 2000ci packs at about 1/2pound. But to make one jump will be uncomfortable at best. And it would make things more difficult with a partner and shared gear.