Promote or wait?

I am a free to play player and I am kinda hesitant right now about what I should do with my 20k feathers.

My 5 stars right now:

Sword:
Alfonse; Marth(+def-res); Gray(+hp-res); Tobin; Olivia(+spd-res); Lucina(+res-att); MaskedMarth(+1); Zephiel; Xander; Caeda(+spd-res);

Lance:
Sharena; Brave Lucina(+spd-def); Effie(+1)(+def-spd); Camus; Clive; Spring Xander(+hp-def);
Clair(+res-spd); Valter;

Axe:
Anna; Brave Ike(+att-spd); Summer Xander(+att-def); Summer Xander(+hp-def); Titania(+res-hp); Michalis;

Bow:
Clarisse; Brave Lyn; [4*Setsuna(+8)(+spd-def)];

Dagger:
Jaffar(+att-hp); Summer Frederick(+res-hp); Kagero(+spd-hp);

Staff:
Lachesis(+spd-res); Bride Lyn(+1)(+hp-res); Sakura(+att-hp)

Tome:
Red:0

Green: Sonya(+spd-res); Julia(+1)(+res-spd);
Summer Elise(+def-spd);

Blue: Ursula;

Breath:0

Units in my promotion list right now:

Lloyd, F!Robin, Legion, Berkut, Narcian, Navarre, Eliwood(+att-res), Roy(+att-hp), Chrom(+att-res), Lilina(+att-hp), Lukas(+def-spd), Reinhardt(+att-hp), Boey(+spd-res), Klein(+spd-def)