Who of these heros should Make u my team for everything?

Hello,

Ayra is good, but looking at the units you have pulled, I don't think she's an absolute necessity to burn your orbs for. Celica, Erika, Linde, and B!Ike by themselves can make a pretty decent team, especially if you run Linde with a bladetome build. Even without it, she's still a pretty strong unit.

Celica is about even with Tharja (as far as I can tell), but is able to perform more impressive feats on her own due to ragnarok rather than relying on a buffer. It's a negligible point however if you do run a team with Eirika since you would have the dedicated buffer anyway, so I think it would come down to preference.

Ike is a pretty amazing tank, so he would be a good option on your team as he can absorb alot of damage and retaliate on the next turn. A dancer is nice also in certain instances, so I would recommend a raven tome set with triangle adept if/when you have access to it as a counter to reinhardt (or other blue mages) and bow nukes.

Also please take my advice with a grain of salt. Efficient/optimal teams take a backseat to my preference of units.

Your current team is fine but if you want more balance I would consider swapping that Eirika for Linde as she is a great blue mage. Eirika really shines when she can be built out as a full scale buff unit and then paired with other units using blade tomes. Eventually i would consider give that Linde Blarblade she is one one the premiere blade users in the game. Celica and Linde will function great as your two primary offensive units while your B!Ike assumes more of a tank role which he excels at. P!Inigo should mainly be used for his dance ability to assist the other three and maybe the occasional attack when called for. As for Ayra if you currently have a pity rate built up then i would finish that off to see if you can pull her as quite frankly she really is that good of a unit. If you dont happen to pull her then i wouldn't force it any further, the odds on this banner aren't very good since she is half blocked by Eldigan. Save what orbs you have, more good banners should be coming up soon.

Linde is a great unit who fits well since she is mixed attacker/healer. The last slot would go to Eirika/Celica/Tharja depending on preference and bane/boon.

With competition for red slot already I don't think rolling Ayra is a good idea. F2P orbs are scarce so you should save them for your real waifus

I want to preface this by saying I completely understand how you feel! While I've been playing this game since Day 1, I had a /lot/ of red units starting out since the unit I really wanted was red and so I only pulled red :'). It's more than possible to play most of this game with an imbalanced team of 3 units of one colour, so don't sweat pulling different colours just for the sake of it! Focus on learning the game and your playstyle.

To be perfectly honest, I consider the performing units a higher priority than Ayra, since not only are they limited edition, but they're very good dancer units that help out a bunch in no-repeat-unit challenges such as Squad Assault or Arena Assault. Depending on what your pity rate is on her banner, try for another 5* at least once before the banner runs out, but don't worry too much. There will definitely be other banners with Ayra on them, and she will be added to the regular pool as well, so she may show up then. Also keep in mind her banner has two more weeks on it, and you'll be getting orbs from the Tempest Trials too!

Given just the units you've listed, I'd recommend Celica/Linde/Inigo/B!Ike or Celica/Linde/Inigo/Sigurd. Both Sigurd and Ike are great physical tanks and it depends on whether you value mobility or more green offense. (I'd strongly recommend Celica/Linde/Inigo/Sigurd for the Trials, though). As a 5*, Celica is better than your 4* Tharja, and Linde is a fantastic unit in general. Eirika is outclassed by the multitude of buff seals and inheritable C skills, in my opinion, and a waste of a red slot. Inigo is sorely underrated and a really fantastic green mage in his own right, especially if you can get Lancebreaker and Darting Blow or Death Blow onto him.

Do you have any other 4*s? They can be possible teammates or SI fodder. Klein and Corrin (F) would be good 4* teammates to the units you have, too (but don't try for them if you don't have them).