Printing color gradients - ow would you print this?

[Stinkhorn Press]

earlier this year we were printing on a manual press, flashing between most everything. have an auto now, some decent screens (thin thread statics), SOME inkling of how to run the auto -

how do you go about printing the best gradients between two colors? are there good rules of thumb for which color underlays the other?
attached is the gradient we're mocking up to print now - 304C left and 351C right on oxford grays. how would you print this?

there's a lot we don't know here and experience will help knock our heads right, but looking for any thoughts to jumpstart that process, thanks!


...
we've had some color fades that we've been forced to flash between (bright yellow to a bright fuchsia) is that just because of the translucency of those inks?

[kingscreen]

We did something like that earlier this year.  We printed a solid underbase, a nearly solid Teal, and then a halftone screen for the Blue (with parts overlaying the Teal). 
3 screens.  White - Flash - Teal - Blue

https://www.instagram.com/p/BCfX_pmPr5O/?taken-by=kingscreen

[Stinkhorn Press]

We did something like that earlier this year.  We printed a solid underbase, a nearly solid Teal, and then a halftone screen for the Blue (with parts overlaying the Teal). 
3 screens.  White - Flash - Teal - Blue

https://www.instagram.com/p/BCfX_pmPr5O/?taken-by=kingscreen

wow, that's rather close in color.
going on independent crew gray heather https://www.ssactivewear.com/p/independent_trading_co/ss3000 i assume that shouldn't need a UB?

what the reasoning behind the teal being only "nearly" solid?