Cruiser Cockpit is: 4’6″ long x 5’9″ wide
Angler Cockpit is: 6’4″ long x 5’9″ wide
The older boats, you will be screwing pedestal bases into the cockpit floor--they will
not be flush and easy to trip over. Newer boats with slightly raised cockpit--I do not believe enough depth to put in the flush pedestal bases. (requires about 3" below surface of foot. Each hole in cockpit floor , or bottom of the boat, required marking, drilling for screw--fitting, then over drilling, citing out core, and filling the area with thickened epoxy, then re-drilling the pilot hole, and putting in the screw (probably 3M 4000 sealant is best)
Not sure what seats you have in mind--there are some expensive seats which will semi recline--but the cheaper ones are more designed for sitting upright. Portable foot rests would make sense in that case.
You have to be sure the cabin door will open and close. You have to be able to safely move around the cockpit. There are always solutions --maybe two chaise lounges like I use on my RV--can be folded up flat, yet will fit in the cockpit of my C Dory 25 (4’8″ long x 7’1″ wide)--and probably in the 22 angler, not the cruiser--maybe if fore and aft in the 22 cruiser? . Steel frames, and mesh support. Easily moved. Very comfortable and very sturdy.
I have taken photos: these are 25" wide,
they can be locked at any angle from upright to fully extended
The first is 48" from foot to head of frame.
The second and more reclined, is 60" from foot to head frame. But, not a lot of room left in the cockpit: The floor imprint, is about 25" x 28". They fold to about 4" easily. It is possible that the foot part (or head part) could be higher than gunnel.
Most all of us carry folding chairs to use on the dock or shore. We spend much of our "lounging" time there--as well as at gatherings. We also have a tarp/shade by Kelty which is 9' x 12' and will shelter a number of C Brats at gatherings.
Some of the "reclining' canvas folding sling back chairs, are very compact, and you may want to look at REI or similar supplier for that type of folding chair.
Here are a bunch--some folding foot stools, also. The Zero Gravity Chair at REI appears to be identical to what I posted above. Very comfortable and only $40 with shipping at Amazon. (Don't know if it is exactly the same)