"Thinking a shower head on each end, rain shower in the middle to share,
and body jets on each side (unsure if 4 or 6 each)."

That layout can work, and it's logical if the shower is fully enclosed. If there is no door, then you'll likely get some water on the bathroom floor due to rebound. With body jets, you'll want a door or their spray will have to be limited at the open end.

I have a 5' x 8' shower, no door. I put the supply valves for the heads right near the shower entry so the water can be turned on without having to step into the shower or get caught by the shower spray.

"Really need advice
from people on if this is too much for this size shower or any tips on
what would be the best placement for heads, jets, and if a center rain
shower would even be used with the distance."

If you've never used body jets, I'd recommend trying before you have them installed. I was going to put them in our shower, but after using them several times in hotels and in vacation rentals? For us, they were frivolous and gimmicky, so we never installed them. Personal preference. Your mileage may vary. If they do get installed, look at "loop" installations.

Rain head, the same. Some love them, some hate them. I'd never recommend a rain head as the primary head in a shower because of the reduced spray velocity. However, I installed a 12" true rain head in the ceiling of the shower, right above the shower's center drain. We like it. We don't use it often, but when we do, the subtle and soothing rain effect is appreciated. I tend to use it in the summer after a hot shower. I'll run the rain head for a minute or two at a cooler temp. It is supplied by its own supply valve. Even though we don't use it often, if I was doing another shower, I'd install another.

Shower cleaning/rinsing: I recommend you consider making one of your wall heads (probably the one closest to the shower entry door) be a handheld on a wall bracket or sliding bar, with a hose long enough for the hand held to reach the recesses of your shower. This way, the handheld can be removed from the bracket and used to rinse down the walls or floor as needed. The handheld that I have has the exact same pattern and flow as the fixed head, there's no loss of water volume or velocity out of the hand held when using it as a shower head.

If there is a leg shaver in the family, you can install a second wall bracket at thigh height on the wall and hang the head there when shaving. Also look at a "toe shelf" for shaving legs. If interested. If the shaver prefers to sit, omit the toe shelf and pop a 3-legged wood stool in the shower.

Center floor drain: In a shower that size, with a head on each end, I agree.If you want to minimize grout lines, you could do a center linear drain with large format tiles sloping towards the center drain from each end wall. Watch the coefficient of friction with large format to ensure you have adequate traction under foot.

Drain size: If you have three heads PLUS body sprays, you'll need to upsize the floor drain and drain branch lines from a 2" diameter to 3" diameter to be code compliant regarding drainage capacity.

Shower supply valves & diverters:Do some head scratching and figure out how you'll use the shower heads and body sprays; independently, simultaneously, etc, so you can figure out valving and valve location.

Example: You could have the supply valve for the shower head on the far end wall by the shower entry so you can turn the water on without being caught in the cold spray. But you could have the diverter valve used to select flow between the shower head or the body sprays right under that head.

Example: For two bathers, you'd probably want each end wall head to be on its own supply valve so water temperatures can be selected independently.

Plumbing: Increasing the number of shower heads (code considers each outlet, body spray outlets included, to be a shower head) obviously increases the demand for water. Address the heating capacity and output of hot water tank, of the supply tubing that runs from the hot water tank to the bathroom (3/4" versus 1/2" for example), and if you had a single supply valve feeding several heads through a diverter, you'd want to make sure that the supply valve itself can pass through the appropriate volume of water (3/4" valve versus 1/2", for example) needed for the heads that it is feeding.