Cr-10s adding SKR Mini E3 V3.0 Control Board and touch screen

Alright friends thanks for your time. I looked for an answer but didn’t find anything under cr-10(s) so hoping it hasn’t been asked already… sorry if it has.

I have a cr-10 that I upgraded to cr-10s with a tiny machines 2 board kit, dual z, and metal dual gear extruder from different company, new hot end but nothing special, and creality textured build plate.

I bought the SKR Mini E3 V3.0 Control Board and TFT35 E3 V3.0.1 Touch Screen which i need help with.

I’m not sure if this makes it an Ender 3, 3 max bec the bed size being 300x300… all this for the sake of picking or building firmware. Since I’m designating xyz travel i figured the Ender 3 skr mini e3 v3 was ok? I was trying to build it on marlin and entered bed size and 400mm z and had picked the Ender 2 option bec that is the closest i saw to it in the list. I see no specs on the product as to baud rate or if that matters.

The display tab does not have this touch screen listed and says it could ruin the board if i pick wrong so i was hoping the Ender 2 option would be good enough not to toast it!

I really appreciate the time and glad to have found this community, hope to return the favor one day and help out where i can. Thank you!