9:0.1 will be fine at that boost/power.
You don't need all three maps done, as ecu sorts out everything according to how it's driving, but DW charges same price anyway.
It has been useful for a few freinds who have afew track cars each, as it's just unplug from one car plug into another flick the switch, or just plug in resistor connector and job done, so saves a lot of cost.
Don't know where you are going for mapping, but if Emerald themselves all I can say is BOOK IT NOW, cancellation bookings are taking 6 weeks to get a spot!!
01953 889110, it will most likely be Leoni who answers so just ask about booking in and whether they have any cancellation, rare but do happen.
Don't forget to fill up with Shell V power on the way!!
tabetha