Hope you enjoy your Gumby, I can’t imagine you won’t! You’ve got a pretty sweet setup going now 
I’ll be curious what you notice going from Bifrost to Gumby… I got a Yggy OG as an upgrade from BF2, and it is a noticeable and significant improvement. The noise floor is less, greater detail and definition, sweet sounding mids, better bass control and extension, and quite a bit better soundstage vs BF2, at least to my ear
But in fairness to BF2, it gets you probably 70-80% of what the Yggy does, which really speaks to what a great DAC and value the BF2 is.
After you’ve had some time love to hear how you’re liking it, and how it pairs with your amps.