Skybet have the bet x 2 £5 request-a-bets get a fiver free on the Chiefs game. So you can re-use the refunded £10 from the super boost. Is what I have done anyway.
I’ve gone for a bit of a speculative Kareem Hunt 150+ rush yards and 3 TD’s @ 100/1
K. Hunt - T. Hill - T. Kelce - D.Henry - D. Walker all to score a TD @ 28/1
And used the free bet on a cross-game special
D. Henry - K. Hunt - T. Kelce / J. Jones - D. Freeman - T. Gurley all to score a TD @ 33/1
Elsewhere on betfair I have gone with Kareem Hunt and Gurley 2+ TD double @ 20/1
Gives me a bit more interest as I watch the games.