Wouldn't say 200bhp is that easy to get and traction is the key word when you get to that stage..
I would say have a word with Turbotechnics they know their stuff on hybrid etc front..
Other work you could try is a Boost controller instead of a bleed valve much more reliable and an FSE boost valve to keep up with the extra power on the fuelling..
Also flowed head will get you a few extra bhp to play with
Have you uprated the suspension wheels and brakes?