Possible trade, what do you think?

I'm in a head to head weekly league. Currently I'm in 4th place and I'd like to gear up for the playoffs. I'd like to upgrade my D and add some scoring, and I just got an offer from the last place team that has me thinking. He offered me Duncan Keith and Logan Couture for my Parise and Carey Price. Scoring cats are G, A, PPG, PPA, SHP, SOG, and +/-, with Goalie cats of W, GAA, SV%, and SHO.

My initial reaction was that my best LW is too much to give up, but Couture has been getting great minutes lately and my D has not helped me much all season. His team is below, what should I counter-offer if you think Parise is too much to give up? Which goalie should I pick up on the wire? Goalies available on the wire are Backstrom, Pavelec, Gustavsson, Reimer, Giguere, Varlamov, Bobrovsky, Montoya, Biron, Schneider, Garon, and Bobrovsky. Thanks in advance for the much needed advice.

							Rosters	Offense
Pos	Edit	Forwards/Defensemen	Action		Opp	Status	% Started	G	A	+/-	PPG	PPA	SHP	SOG
C		Logan Couture (SJ - C,LW)			@Pho	8:00 pm	74%	21	19	10	5	7	2	147
C		Steven Stamkos (TB - C)			Fla	7:00 pm	95%	33	22	3	6	6	0	175
LW		Vinny Prospal (Cls - C,LW)					11%	9	23	-14	2	6	0	110
LW		Max Pacioretty (Mon - LW)			Was	2:00 pm	46%	18	19	-1	1	6	0	174
RW		Radim Vrbata (Pho - RW)			SJ	8:00 pm	52%	23	17	10	4	4	1	144
RW		P.A. Parenteau (NYI - RW)			Buf	7:00 pm	47%	11	36	-2	5	10	0	108
D		Duncan Keith (Chi - D)					80%	3	24	10	1	10	2	113
D		Oliver Ekman-Larsson (Pho - D)			SJ	8:00 pm	12%	7	14	-2	1	4	0	83
D		Sergei Gonchar (Ott - D)			Tor	7:00 pm	62%	2	25	-1	1	10	1	90
D		Francois Beauchemin (Anh - D)					16%	6	12	-2	2	2	1	83
BN		Ryan Getzlaf (Anh - C)					50%	8	27	-16	4	12	0	104
BN		Ryan Callahan (NYR - RW)					34%	17	19	4	7	2	2	143
BN		Brad Richards (NYR - C)					50%	16	17	-2	3	10	0	133

							Rosters	Goaltending
Pos	Edit	Goaltenders	Action		Opp	Status	% Started	W	GAA	SV*	SA*	SV%	SHO
G		Tomas Vokoun (Was - G)			@Mon	2:00 pm	80%	20	2.60	927	1013	.915	2
G		Devan Dubnyk (Edm - G)			Det	10:00 pm	8%	9	2.89	677	743	.911	0
BN		Craig Anderson (Ott - G)			Tor	7:00 pm	55%	25	2.90	1340	1473	.910	1