Hey Tim, I'm also an Express Entry candidate with disability (I'm deaf) so I have done a fair bit of research on it. Here are the cliff notes
1. You can be denied on two grounds - danger to public safety/health or excessive demand on Canadian social & health services. 1st one is not applicable so to get through, you will need to prove that you won't be an excessive demand on Canadian health services.
2. Getting a medical done (even if you get a medical report) will not show whether you will be admissible or not since that decision is not taken by the panel physician but by the visa officer who processed your application. All what the panel physician will do is document your disability and what all treatment is required for it. The VO will evaluate whether the treatment is going to put an excessive demand on Canadian social & health services.
3. To be medical admissible, your treatment must cost the Canadian government less than ~$19k/year. I noticed you have listed physiotherapy and speech therapy. To calculate the cost, you can Google and find speech therapists & physiotherapists in the province that have selected in your application and estimate the costs from there. For e.g. I found this
https://www.osla.on.ca/uploads/2017 SLP RECOMMENDED FEE SCHEDULE POSTER.pdf while Googling so we can assume that speech therapy would cost $200/hour. in Ontario Assuming you need speech therapy once a week for one hour, it would be $800/mo or $9600/year... well under the excessive demand threshold. Similarly, you can Google for a estimate price for physiotherapy, calculate annual cost and add the two to get total amount.
4. If your estimated treatment expenses are well under $19k/year.. then it should not be problem. If its around $19k/year or in excess of that, you will most likely get something called a "Procedural Fairness Letter" where they will ask you to justify that you won't be an excessive demand and for this, you can submit an outline of the treatment plan giving references to online sources where you have taken the estimated prices from.
Best resource on this is this link -
https://www.canada.ca/en/immigration-refugees-citizenship/corporate/publications-manuals/excessive-demand.html. See the two examples given where they have shown how you could go about estimating how much you would cost Canadian social & health services.
Hope this helps!