need a fair deal

[vkotlyar]

a friend of mine wants to put me into the stars saturday grtd tourney. ( i think its 200+15 but i could be wrong) for exactly one year. What would be a good deal for both of us? We were considering 60-40 in his favor and pay at the end of the year. Is it normally done per event? For example, lets say i dont cash in 3 weeks, but then make $1000, should i then receive $400? I am a winning STT player but have not played too many MTT online.
thanks in advance for your replies
V