May i have your wisdom please ??

If using bold fighter Hector use ignis, as it will be a three charge special and if he attacks someone who can hit back they he will have it charged by the second attack. And if you use both bold fighter and steady breath on Robin give him the quick repost sacred seal so he will always double. Bonfire and slaying bow may be a better combo on close counter Jakob and if you have it giving steady breath to Zelgius will go well with Wrath.

Since you don't have armor march, you probably want to focus more on enemy phase than anything else. Robin as a purely player phase unit isn't going to fit in very well, so giving him vengeful fighter would be better overall. Zelgius would greatly benefit from steady/warding breath and a quickened pulse seal allowing him to trigger black luna more reliably, so if you don't have any bikes lying around, I would highly suggest summoning red on the legendary banner for legendary ike. The only fix hector needs is a better special; ignis is optimal but bonfire works just fine too. Jakob is great at what he does already in terms of what you built him for, but his damage output is mediocre. If I were you, I would give him distant def a slot and vengeful fighter to make sure he can get kills on enemy phase so you don't have to waste your next player phase. Either aether or ignis could work as his special with this build.