You have to admire the hubris and confidence here, I wonder how much of this is just for the press vs what he truly believes.
The 1500 and 5000m records in particular are no joke. El G - still in the middle of his career prime in terms of record breaking ability tried multiple times to break 3.26 and couldn't - even despite some wild attempts (especially at Rieti).
With respect to the 5000m WR - what's the one thing in common 3 of the last 4 record holders had in common? They were also WR holders over 10000m (JC, Kene, Geb). Komen is the outlier there and Jakob has commonality there with the 3000m ability, but my feeling is that when you are talking about running under 12.35, it falls more into the aerobic capacity/threshold side of excellence vs the anaerobic one (where his particular forte sits).
What I think raises my eyebrows is wanting to do it in one season. That could end in absolute disaster. He has just lost an entire season to an overuse injury - and that makes sense given what we know about his training philosophy which is very little anaerobic work past his threshold with the flipside being he needs considerable volume just below it to generate his fitness/potential. So this approach I'm not sure fits well with two distances like the 1500m and 5000m which require different approaches. I know the counter already - "but he ran 7.17 in the same season he ran 3.26" but the 3000m and 5000m are very different events at that level of running. His workout volume and specificity for the 3000m would be virtually the same as it is for the 1500m. That is not the case with the 5000m.
Honestly, I can't fathom a scenario where his body holds up. Last season we had the rumors of a 5000m attempt (in Oslo) and it coincided with him breaking down. Was that coincidence? Maybe. But it's also possible the demands of trying to be in sub 3.26 and sub 12.35 shape at basically the same time (or within a few months of each other) were too much. He's not a robot or superhuman.
I've never felt he had the anaerobic power to get the 1500m WR. El G was a very different runner - there is a recent thread on his training, go and compare that to what Jakob posts from his training if you need the evidence of that. The problem he has is by hanging on to the 1500m record he might legitimately hurt his chances of the 5000 - assuming he actually is capable of it (because the reality is as of today he has a PR that is 13 seconds slower). Time is running out. No athlete at this level has more than 3-4 seasons of world record ability and that is across almost every track discipline. This is likely the last season of his window, though because he lost 2025 that might extend to next season for the 5000.
If I was him and assuming I get back to my 2024 fitness - Mile WR is the priority. It's a legendary record and it's much weaker than the 1500 and the 5000m. And it bumps out an El G record and puts you right beside him plus you then own this real estate in the record book from the mile through the 3000m. Plus I think the mile record is achievable with more of the training he would do for the 5000m. Then you can see what 5000m opportunities are available (late season Zurich, Brussels) and then completely focus on 2027 for the 5.