B-1: Expect 6-9 months. Again, classes, and sims with contract guys (all retired B-1 guys), followed by hitting the flightline. You don't do too much in they way of sims after getting on the flightline. Overall, the academic phase is fairly easy, short days with time for self-study and such. I encourage you to use the CPT ("cockpit familiarization trainer", or stripped down sim) early and often to figure out where the buttons are and what they do.
After you go to your gaining squadron, MQT is advertised as 6 rides, each with its own focus (defensive tactics, guided weapons, stand-off weapons, flex targeting, unguided weapons, and dissimiliar air combat training). The pace for an MQT student will be reasonably laid back as long as you keep the snack bar stocked and the taps filled with beer. MQT culminates in a verification, where you get a day one scenario, spend a week planning for it (both the B-1 mission and the package assets), and execute in the sim. The grand finale is debriefing the scenario to the squadron, including WG/CC, OG/CC, SQ/CC, and the rest of your bros.
Study hard, ask questions when you have them. Its rare to have an instructor tell you "go look it up" instead of helping with a question. Even when someone told me to look it up, they came with me to show me which TO it was in, and to translate the engineer-speak so much of our TO seems to be written in.