1. You already know this one
2. Your Signal Officer training is broken into 4 mods for a total of 109 training days.
3. It depends on the course. For example Formation Signals Operations Course is 10 days of DL followed by 12 days residency. This will be done later in your career.
4. Again depends on the course. For example, your BMOQ-A, which you will take following BMOQ, is 55 days and is done in Gagetown. Other Army courses will be offered at various times in your career.
While at Kingston for your SigO course, you normally live in barracks, however there are sometimes concessions made for married members. While waiting training, you will do OJT at a unit or at CFSCE. For FSOC and other SigO and Army specialty courses, if you are not posted to the location the training is taking place, you will live in barracks. If you are posted there you will live at home.
All courses have different lengths, so it is difficult to predict how long you will spend in formal training, and not all courses will run back to back. Expect around a year for BMOQ, BMOQ-A and SigO training which you will attend consecutively before you can take any other courses.
Edit to add other requested info and for clarity.