Aye that's not a bad plan, to be honest I think my Strix still has a few years left at least but we'll see.

Judging by my experience with the Framework 13, you gain basically nothing going pre-built. The DIY work required is laughable. It's so, so easy and simple. If you don't account for nervousness, you could do it in 5 min, no problem. Comes with a very nice little screw driver, which is all you need.