I might reconsider the Lumin T2. The Sopra's are lovely speakers but drift bright and the Lumin T2 is definitely on the brighter side. I have one here and it is brighter than my Chord DACs. I am not sure you can find an amp that is going to be warm enough to deal with both.
The Gryphon is brilliant and with the speakers alone, you will be in a great place. There is a Boulder integrated with an on-board DAC that is very good. You could also look at the Hegel 590 which will have plenty of power and a good on-board DAC.
You might look at a somewhat less expensive amp and get a DAC that is not going to drift as bright. Are you planning on using the Lumin as a streamer or as Roon/Rendering endpoint.