Hey there @hazek!
I'm right about there with you in the process of getting confidence with my Bravo (but I am IR-rated already). Let me just note down some of the very important lessons of these first 50 hours with my plane, and let's compare notes :-)
As you noted, landing a Bravo requires speed and energy management; the beast is very efficient, so I needed to plan ahead and slow down early. That will be important for you also while flying an IFR approach, you'll see.
If you are on speed on final, landings are almost always great. If you are 5 knots faster you need to hold it and have runway for it. More than 5 knots call for a go around unless you are landing at the Space Shuttle facility.
Weird landing picture: flare 3 apparent degrees more and one full second later than my PA-28 picture got me to the right point with my landings. Staring down the runway from the line up position to fix in mind what "flat" looks like helped me dramatically.
More right rudder :-) I know it's a worn-out joke but in most situations I had to retrain to use the rudder much more than I did previously. I religiously set full right rudder trim for T/O and landing and it helps.
Speaking of trimming: she wants a lot of trimming, in particular while landing.
(good) cross wind landings: still working on them, and even on here there's less useful material on those than on everything else; hints from experienced pilots would be appreciated
Engine management: honestly I found it reasonably easy, the G1000 maybe helps in that with all the parameters available at a glance... I think the key is not overthinking about it, honestly
There's a lot of things to look at in cruise, develop a flow and prioritize those that can really harm you
Checklists: the ones in the POH are really long and some points are debatable, for that reading through this forum has been incredibly helpful
Late go arounds - balked landings must be trained, the sequence of things is important, and I fumbled a bit before getting the hang of it
Sometimes there will be a sh*tty landing, that's okay as long as you either go around or recover by keeping the flare and adding power if needed, and NOT by pushing the nose down on instinct