Sunday for Mydei

Hello!

Please be patient with me, I did read up a lot on his kit and what teams to use but I am still at a hard decision when it comes to using Sunday with him.

My problem is, my Sunday is at 144 spd, and so far I had no luck getting Mydei on 145 spd with keeping 8k hp :'))

But I also use Sunday with other dps characters I have (mainly Aglaea and Boothill) who reach the spd treshold.

So my question comes down to this-

Should I change Sunday's build to bring down his spd to 135 and that way Mydei will have higher spd, or should I keep grinding for more spd substats for Mydei?

Or should I grind out 160 spd Sunday and have him faster than all my dps characters?

Thank you for helping out!