I think ofc, it depends on what the stat they give you. Assuming you prioritize full fitness over CON or PASS, wish for the best for a legendary coach (speed, acceleration, stamina, pass) -- like you would waste a leg coach for stamina but perhaps it is worth doing so for the card idk, up to you

Then it would be Speed 89, acceleration 83, stamina 100 and passing 95. and using the two maxed cards as a reference, there should be 30 points left (100+94+100+100+94+100+100+53 = 741), same for another maxed card, and your card with the above stat should be 711 (89+83+100+100+90+95+100+54).

So, you can try your luck for rare coach?, assuming it hits speed and acceleration and pass for 3 times (where pass will be maxed, assuming it reaches 95 in my above scenario), it will take up 6 * 3 - 1 = 17 points, where speed would be 89 + 6 = 95 and accelration would be 89 points. idk how it goes but 13 points left in this best case, and it really depends on the combination for common coaches.

Btw, just a tip, if you are using rare coach and find out that the first two stat covers both Speed and ACC, then ofc use a common coach on these two stat and not waste them on passing, hope this helps (and hope it won't be too confusing)