You will not be able to wear gotter without using str mo on all your gear, also steppe sleeper and crafted creepy belt where you hit flat all attributes, even with all that you still need full sigs and all charms that give flat or % attributes + big str umbaru chest + big str wormhole to wear gotter.
As seekers suggested use that calculator to find out bps for different bases , gona throw on bp you should aim (5fpa) for if using gotter (170 wias minimun and 507 total gear ias, which also includes your wias) and fhr breakpoints are 86 fhr for 4 frames and 200 for 3 frames.
Its not my intention to disrespect, but rather to making this guide better can you actually go play bear and use those items you suggested, there is so many random items that do nothing for build. Anyway gotter is center piece of this build, and you need to build around or for it, so getting 5400 str is priority, and you are no where near that with gear you suggested.
Nice format tho, you just need to play build into end game and see what works and what does not, and not just post random items like dementia and klatuu and few others .
Also mixing rend and wildfire is no go, with "endgame" gear wildfire has 0 use, only part where i used wildfire was few stoneskin unique monsters while proggresing hell, so either make wildifire guide and post items for wildfire, or go full rend and leave out items like dementia and such.
All in all it just seems like few people gathered in voice chat and slapped some random item suggestions, you have the basics just go play and try to get gotter eqiuped it will get to you how you supposed to build rend bear.