To suggest that we have to have a big power hitter at first is laughable. The Twins and other teams have had light-hitting first basemen before. The Twins have had Kirilloff, Mientkiewicz, and Ron Coomer. Even the Yankees have had Greg Bird, who was not known for his power, in the lineup. Whether a first basemen hits the ball over the wall or into the gap still drives in the run. I'll take a full lineup of Lewis's, if they consistently hit the ball into the gap over a lineup of Joey Gallo's, who has light tower power, provided he can find the ball with the bat short of hiring Sherlock Holmes.
As for figuring out whether Lewis is the long-term answer at first, this could have already been addressed by now had they done this last offseason, which was move Lewis off of 3B to first or second. Because they failed to address this last offseason, we need to use up another offseason to see whether the Lewis experiment will work or not. I could also make the argument that they could have addressed this in the 2024-2025 offseason when all the comments were flooding in about Lewis refusing to play second in September of 2024.
I could be intrigued by Keaschall at first. Mainly because we just have too many OF that will need playing time and are better fielders, even if they move Larnach or not offer him arbitration, and I'm not even including Wallner, who probably needs a Julien type of trade out of Minnesota at this point. Lewis could then move to second with Clemens being the LH Swiss army knife that gives a platoon advantage.