You guys are making 121 training seem so much harder than I remember it.

I was so bored for that 10 weeks. It's mostly death by powerpoint for the first few weeks. The ftd and sims are kinda fun; you see the instruction come together. Every procedure and profile is spelled out in detail in the FOM Vol 1 and the instructors will teach you from that. Follow the procedures and instructions and it's not hard. The 145 is a very easy first jet. Relatively simple systems and equally simple FMS.
Your experience can and will vary.