When you refit the ISCV one of the screws can be loosened and the ISCV can be moved around marginally, you'll find you can actually make some 100rpm adjustments just by sliding it around and experimenting, had to do this to get my idle down after I changed my spark plugs.

Mine cold starts to about 1200-1300 drops back to around 900 when warmish and them usually down to around 800 idle.