You hint that some of the tracks may already have the track number at the start of the filename, so the best approach here, I think, would be to use the "Rename, move & copy" tool.
Try one or two first.
When you open the tool (found via right click > Library tools > rename, move and copy files) you would choose "Template", deselect directories, and in the filename field, you would enter the template:
[Track #] [name]
MC provides a handy "before/after" list on the right hand side. Any files that already match the template will be flagged as "No change". The rest will be updated. Try a few, and once you're comfortable, you can select the whole lot and get them all done in one go in very short order.
As for the ripping options, before starting the rip, look in the action window in the lower left corner of the program window, and you should see a clickable link to the options. Look specifically at the "File name" options. I think you can work it out, but if you need more help, just shout, there's always someone nearby.