Good idea, but I’d spend a wee bit more for an Ultralite 4 or something. That way you can use the the digital i/o to expand in the future if you need to. I have a UL MK4 with a Motu Traveler that I picked up cheap. You could even look at the Motu Traveler series, but I think their DC coupling might be a little weaker than MK4s, which you can remedy by running through an Attenuator, or something.
Haha, never mind I see there is no mention of EURO in OPs post. Geez we’re bad influences. Yeah the M4s/M6s aren’t a bad idea, unless you intend to need more inputs.