Hello.
Here are my answers to your questions.
1. Yes you need to have a Medical Exam right before you send the application. It must be included in your application kit and it is also written in the checklist. You must complete the checklist before sending it to avoid delays.
As for IMM 1017, you can print out Appendix C. You can find it online. You can google appendix C.
You wouldn't get the form IMM1017 right away. As soon as you have scheduled your medical examination. You will have to bring Appendix C. Then as soon as your husband have finished the medical exam. After the tests and results they will give you the form. That would now be FORM IMM1017 with the client biodata. That's the form he'll include as medical exam in the app kit.
I advise you to have the medical examination last since it has an expiration date. You can check St. Lukes Extension Clinic for the required docs needed and fees as well.
Sadly I can't answer question number 2 since. But I think it is automatic because MA is not acceptable as a name in Canada.
3. Yes it is okay to print and fill out the application form by hand. It would be your choice. But for me it is easier by hand. I advise you to have a draft first in filling out forms. To avoid re-writing all over again if you happen to make mistakes. Lastly you can check the guides in filling out the application form on cic website.
Hope this helps and Good luck! ;D ;D ;D