Regarding your first and second questions, it sounds like there's a canon mechanism that requires a Servamp and Eve not to get very far from one another. Unless there's something about that mechanism that's incompatible with TFS mechanics, this should work the same way as it does in canon.
One character being in the Near Shore while the other is on the Far Shore, however, would not affect the bond any more than the two characters being some distance apart on the Near Shore would.
3) Yes, your character could work on opening orphanages. This is something you're welcome to have him start doing at any time, and he doesn't have to have reached specific follower counts in order to begin the efforts. (He can always look for funding from other sources instead of paying for them entirely out of his own pocket!)
4) Events sometimes offer opportunities to design your own missions or prayers. Please feel free to talk to our Missions & Prayers mod about doing something like that outside of events. Mostly, the souls of the dead move on rather than lingering in the mortal world, and most of the souls that do not move on are corrupted by negative emotion or preyed on by ayakashi, so it's difficult to find lost spirits that can be named as shinki. (That said -- you might be able to have him rescue one or two lost souls this way!)
Re: this...got a bit long and i'm not even sure if i remembered all i might need to ask
One character being in the Near Shore while the other is on the Far Shore, however, would not affect the bond any more than the two characters being some distance apart on the Near Shore would.
3) Yes, your character could work on opening orphanages. This is something you're welcome to have him start doing at any time, and he doesn't have to have reached specific follower counts in order to begin the efforts. (He can always look for funding from other sources instead of paying for them entirely out of his own pocket!)
4) Events sometimes offer opportunities to design your own missions or prayers. Please feel free to talk to our Missions & Prayers mod about doing something like that outside of events. Mostly, the souls of the dead move on rather than lingering in the mortal world, and most of the souls that do not move on are corrupted by negative emotion or preyed on by ayakashi, so it's difficult to find lost spirits that can be named as shinki. (That said -- you might be able to have him rescue one or two lost souls this way!)