Here is my team, not sure if I should pursue a trade or not

[JHeyward22]

I'm currently tied for 1st in my league. It's a 12 team H2H league that scores on Avg, OBP, HR, RBI, SB, Wins, Saves, Walks, K's, ERA, WHIP.

The trades I've made thus far were

Eithier for Aardsma and Frasor (this looks bad but keep in mind I had only one closer headed into the season and this move led to other moves)

Cliff Lee for Adam Dunn

Morneau and Aardsma for Soria and Bell

Doumit
Dunn
Cano
Escobar/Brignac
Longoria
J. Upton
T. Hunter
C. Gonzalez
Snider
Swisher
Pence
Ka'aihue

Haren, Lackey, Price, Liriano, Soria, Bell, Valverde, Street

My question concerns two players. Adam Dunn and Justin Upton. I was really high on both coming into the season, I drafted Upton in the 2nd round and I traded for Dunn as you see. The presence of Dunn led to the trade of Morneau and I still am confident with that trade because it helped my bullpen a lot. Still though we're into May now and neither one has really turned it on yet. Do you think they'll come around or should I pursue trades?