Ihave do this before... 5000 UI but I decied to split is like htis
1000 UI the first shoot
500 UI eod day
Novadex
Clomid
I have noticed that the longer you store the mixed solution, the more painfull the injection is... I prefer not to store it for more than 2 week.
There is an interesting product called Ovidrell, is subcotaneious and is already mix.... a bit expensice, but works.... I prefer this when there is money to spend.