This Houzz Article claims a firepit needs a minimum 12' diameter circle. If you can make it larger so much the better. The article also gives info on how much space to allow for other areas. Remember that unless your firepit is smokeless, you may not be able to sit on every side of the fire. Not everyone likes eau de woodsmoke that much. Perhaps the area below the patio would be suitable. Firepits should be a minimum of 10' away from trees and buildings and should not be under any overhanging limbs. Larger firepits may need up to 20' of distance. Remember that the heat rising from the fire can singe and damage or kill leaves.

IMO the first thing I would do is build an nice 2 level extension to the deck so that you would have the BBQ outside the kitchen and then a level with dr and another for seating and use the patio for the firepit disregard the pool

I'd get red adirondak chairs, a table between them. I'd plant gardens or shrubs in the bare dirt, and some groundcovers. I put in a bunxh of tiarella plugs.

Pergola is a good idea

These are all awesome ideas!
-pool would be fun but pretty short season up here 😀
-BBQ is up on the deck off the kitchen there’s a covered section of roof overhang 5’ we end up with 4 seasons of use.
-I marked out a 12’ diameter area for the fire pit looks like that will work
-gas vs wood is a debate that rages on between us. My wife has suggested fire pit but put a gas fire table / bowl on the patio, something she can turn on/off at night
-I’ll look into some ground cover plant options as I know nothing about that stuff

Be absolutely certain that the heat from the fire pit will not be near any vegetation you want to preserve. The heat that rises from a fire pit is considerable and it can damage nearby upper vegetation. That's why they need so much room around them, for the heat to dissipate. Also for sparks.

We don't use our fire pit a whole lot. When we use it we really enjoy it, but it's not like we are having a campfire every weekend. So plan for how you will use and decorate the area for when it is not in use, which will be more time than when it is in use. We have some planters that we decorate with and move them when we have a fire.

Oh, and also plan for some type of wood storage nearby. I wish I could have a snazzy decorated woodbox. As it is, we have a metal wood rack covered by a tarp, not the most attractive landscape feature . . .

What a gorgeous back yard you have :) You could think of the 12 x 16 patio as your outdoor living room and furnish it with a comfortable sectional or chair and coffee table. Or, you could put a hot tub and a couple chairs on it. (We love going into our hot tub morning or evening each day - it really doubled our enjoyment of our outdoor space as well as easing the aches and pains and making us sleep like babies.) The wood burning fire pit could be more of a destination, perhaps down in the cleared area behind your stack of logs and beside the trampoline, just on a gravel base. I love Adirondack chairs around a fire pit for a rustic vibe. If you purchase ones by Polywood or similar brand, they can be left out year round and rain and snow won’t hurt them.

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Here are some ideas:

That looks cool. I guess in hindsight here you don’t need seating all the way around the fire pit do you?