Have not taken this class but have taken another solo cert. Essentially the course I took was more an evaluation of my skills as a diver as opposed to a teaching class.
The essential issue is: are you capable of solving unexpected problems under water by yourself. Some discussion about gear, redundancy, dive planning, etc. However by 100 dives (the minimum required) you really should'nt need much "training" for these things. Diving with a buddy doesn't really change the requirements except that YOU must carry any gear you consider as essential for doing the planned dive safely as opposed to relying on your buddy to carry it. What that gear is will depend on the dive, your skills and the level of risk you deem acceptable. Personally I don't buy in to the "you must carry "X" if you solo dive" philosophy where "X" is the mandated list of equipment. Much rather use the grey matter between my ears and make my own decisions.
The problems I was asked to solve were things like equipment failure (he managed to get my BC auto inflator disconnected about 10 seconds after I checked it before entering the water which really surprised me - gave him a good look at how I dealt with surprise equipment failures), OOA switch to redundant gas and surface on redundant gas, entanglement, line deployment, doff and don. Maskless ascent was off the table as I had another very expensive course a few days later that required three days of diving and I didn't want to risk a sinus problem, always an issue for me if I lose a mask and get water up my nose. This other course had a very large component of mask off drills so there was an assumption I could handle it. I would expect that you will have to deal with a lost mask. You will want to be able to deal with a mask that is knocked off as a surprise, swim and surface in control without it - or at a minimum retrieve your spare and recover. Personally I would want to be able to surface with no mask.
I would expect the instructor to help you find your comfort level and limits more than give you specific training.