This is so individual. 10 hours is a decent chunk of time.
What you can learn depends on you and your coach. I would try hard to have one coach for most of the time, though mixing it up a bit could be useful as well, especially if you find yourself stuck with the feedback one coach is giving you. It's a very personal thing.
Try to decide going into it where you want to be at the end, and discuss this with your coach so they can plan a good progression for you. I don't think it is unreasonable to aim for solid sit skills in ten hours. It's also probably doable to get to basic head down. You need to decide what you want, and put your time into that. Everybody learns different things at different paces, and there is definitely no set schedule like "sit flying takes two hours", "head down takes five".
Also, and very non trivial, doing ten hours in eight weeks is a lot (especially for someone not used to tunnel flying). Don't underestimate how sore and fatigued the tunnel can make you. You'll certainly see diminishing returns once your muscles stop cooperating with you... It is a lot more physical then you might expect, especially learning new orientations like back or sit flying where you are using muscles that don't tend to get used that way in normal life (or most other physical activities).
But I'll say it again. More than anything, get a good coach and talk through what you want to do. Have fun!