pls review this plan and what T to use for vents?

The plan is to add a small studio to the garage. I have a 2"drain sticking up (label DRAIN) that's been inspected, a 2" vent that goes through the roof and another vent that needs to get hooked in from a basement sink ("vent from below"). Today I'm adding two sinks on "loops" (a and b). I planned on connecting the drains to the drain that goes into the floor, and then running an upper "run" for venting that picks up a connection from the floor drain , turns the corner, and then picks up the other vent before heading up and out.

Where loop B connects to the other longer run, I plan to use a long sweep tee. The vent run above would be a sanitary tee.

What I'm wondering is , first off, in general how does this look?
Second, do I need any cleanouts? If I did, I don't know where I'd put them. The sink on loop A is behind a run of cabinets. The sink on loop b is in the wall behind a vanity.
Third, where two vents meet horizontally from different directions before heading up through the roof, is there a special T I should use? I suppose I could stack two tees so they each have their own sweep.

PS: shower and toilet are in but not part of this diagram. they have been approved to use the "wet vent" that's going to accept the output of loops A and B and then extend up to the Vent "loop"

the only thing I can say is make sure vents off sinks go straight up til they are 6" or more above the flood rim of sink. as far as cleanouts I would put on stub outs for both sinks then trap off sink. also for vents use a sanitary tee. one is usually good around here...

Can you be more specific on "stub outs for the sinks" ? That's the part I'm up to. I can't figure out where/how to put cleanout "t" or at the end of the run that won't be buried in the wall or showing in the room.