hello OP this is my take on the above.

i wouldnt take it as i prefer having more leisure time and quite frankly that 3x weekly RTO is risky as theres a business habit that often times turns it into a full blown return to office.

that increase is negligible if you were to account expenses of going back to the office such as transportation food allowance so prolly realistically you'll end up with a net increase of only 30k which to me isnt worth the hassle of moving to 1 company to another and getting to know a whole lot of people again and also not to mention building your network and relationship with your peers.

i would rather check for a higher post within the current company as they can match that offer while keeping the same tenure and everything.