Hi Chris and welcome to the forum. Since you're talking about using midi files, you should also learn Real Band. A lot of people overlook it because they think Biab is the real deal and RB is just some sort of a throw in freebie. Not so. RB is a hybrid of Biab and Power Tracks. It gives you 48 tracks to work with, they are all displayed on your screen, you have 32 midi output ports, much more flexible routing and uses of plugins, much better midi/audio editing functions and more. The best thing for me when working with midi files is the ability to use different synths for each track if I want, add as many RT/RD's as I want on a track by track basis and finally create Biab midi style tracks also on a track by track basis. The key here is RB doesn't limit you to one style for your whole song. You can use a different style for all 48 tracks if you really went overboard with it. You could for example, create 3 or 4 different rhythm guitar parts using different styles on different tracks and then mix and match them to create one good guitar track.
I could go on and on but the short version is both programs complement each other. Biab does things RB doesn't do but RB does a whole lot Biab can't do especially when working with midi files.

Bob

Biab/RB latest build, Win 11 Pro, Ryzen 5 5600 G, 512 Gig SSD, 16 Gigs Ram, Steinberg UR22 MkII, Roland Sonic Cell, Kurzweil PC3, Hammond SK1, Korg PA3XPro, Garritan JABB, Hypercanvas, Sampletank 3, more.