Toe-in recommendation for stand mount monitors

I've used floor standing electrostatic speakers almost exclusively for over 30 years and am transitioning, I think, to stand mount monitors. I've positioned them to start with in the same location as I had the Martin Logan Ethos speakers and the Odysseys previous to them. The listening area is about 18 X 24 feet with the speakers positioned 12 feet apart and 16 feet from my listening spot. From the standpoint of the often discussed equilateral triangle recommendation this is not ideal but I really have very little latitude.

Regarding toe-in, with the ML's I used their suggestion of the "flashlight method" as a starting point but for "conventional" speakers several articles suggest using directions given by the manufacturer. The speakers that I'll be using, though, are old, having been manufactured in the mid 90's and I have no manual for them.

I don't know if it makes a difference for the purpose of this discussion, but these new speakers are the original Serie Reference MMC 3A's manufactured in France. They're a mid sized speaker with a rating range of 40-20,000Hz which would accommodate most of our listening requirements but I also purchased a used Polk Audio Micropro 4000 sub woofer to use with them.

Any suggestions would be much appreciated.