We're too weak in all areas to really not capitalise on our strength here, which is analysis and thinking. We're not superhuman yet in that regard. You're also forgetting that in a couple of months at the very least we'll have peak human fitness levels if we exercise a bit. I don't think we need the strength yet, in the future, sure.
Also analysing and understanding dead bodies has its own advantages. It'll possibly lead to much better shapeshifting, which we essentially missed with Ean.
What good will analyzing dead bodies do when we can't even run decently and can barely lift a pen. You're saying we can take it later, but what makes you certain the opportunity will still be there: right now, we're picking an ethos, brains versus brawn.
We're not weak with the STR, AGI and END (I also won't be surprised if he's extremely susceptible to illnesses and poisons) categories, we're almost in the negative. Our INT is pretty good, PER and CHA are on the level and I think our LUK is decent enough. That's three attributes, right there, that we'll be able to raise immediately to a survivable level.
Besides, I want to get our boy a military officer position and I doubt they accept someone who can't even do one pull-up. Trust me, piloting the mechs that, for all intents and purposes,
we are creating will have it's advantages.