Fantasy moves (potential)

My squad:

t. green
s. mcnair

m. harrison
a. boldin
j. smith
a. lelie
k. colbert


p. holmes
l. johnson
k. jones
s. davis
ricky williams
d. blaylock

r. mcmichael

cinci, chi d

I was offered h. ward for either s. davis or k. jones
Is that a significant upgrade? would i be better off trying to package say lelie and boldin (this guys team sucks and needs an overhaul) Do i need to upgrade my qb position? Everyone in my league is going trade crazy for some reason. i feel the need to take advantage but would like some insight into my major weaknesses.

sorry if these are bad questions.. my first time doing this