I made a little wiki page that compares an expensive and budget set of gear options a rogue might pick if they only wanted to maximize strength. Obviously there are other considerations you would make with your actual gear but you can see that here:
https://wiki.project1999.com/Rogue_Str_Comparison
You could spend:
roughly 25k plat to get 161 strength (with no haste item)
roughly 3k plat to get 120 strength (with no haste item)
With the particular trade-offs you make changing that around a bit. Like assuming you got SCHW for a haste item you can basically subtract 10 str from those totals.
Combine this with the info about the stats you're targeting for super-high end play or use your own judgment if your mostly interested in the 1-55ish journey.
I find anecdotally that it feels like in my lvl 30ish-40ish tunes that the ones that have very similar gear but high or low str that there is approximately a 10-15% gap in damage. Its noticeable and makes a difference in a game that has such tight margins on a lot of fights, especially if solo, but not night/day