Trade for T.Y Hilton Help. Half-PPR team details in thread

I am needy at RB (as are other teams in my league) with Monty injured, so I dropped a my Kicker to pick up more RBs for this week. I was thinking of buying T.Y on the low to free up some bench space and to be able to pick up a stupid kicker. Start 1 QB, 2 RBs, and 3 WR or TE flexs.

My Team:
QB: Brissett, Luck
RBs: Montgomery, Fournette, Kamara, Foreman, Gallman (NYG), McGuire, Chris Thompson
WRs: OBJ, Jordy, Keenan, Parker, Martavis, Jaron Brown

Other team:
QB: Brady, Ben
RB: Demarco, Powell, Blount, White
WR/TE: Amendola, Tate, Marvin Jones, Hilton, Kearse, Even Engram, Whitten

I was thinking of offering 3 of the following Jaron Brown, Martavis, Parker, and Thompson for T.Y not sure if that is not enough or too much. Or who should I drop for a kicker if I can’t get a trade?