I believe that the Line Magnetic 508ia could be an excellent match with the Funk speakers and their relatively easy load characteristics. 300b tube drives the 805 output tube for 48 watts of "pure" class A power. This type of DHT (Directly heated triode) tube amplifier is capable of superb sound quality. It’s a different approach vs the more common class A/B amps such as the transistor Belies or the push pull tubed PL. Something to consider if really interested/enthusiastic about an exceptional tube amplifier listening experience.
Single chassis so avoids multiple boxes if that matters. Heavy single box due to big high quality transformers and power supply (which is good). A very worthy viable alternative to consider compared to the well regarded Belles or PL options. My gut feeling is that the LM 508IA and Funk speakers could be a superior musically and engaging match. I doubt that any of the three choices would disappoint you.
Best of luck,
Charles