Nozzle size for dsm

[crazyboost]

I'm looking into buying this water injection kit off ebay. Its a fairly simple kit and cheap, which is what im looking for. Does anyone have any experience/input about this kit?

http://cgi.ebay.com/ebaymotors/WATER...temZ7969696205

I'm wondering what size nozzle would be right for my car, the 200cc or 300cc nozzle?
1992 eagle talon tsi awd. my mods are: MBC, 3" RNR turbo-back, boost gauge, egt gauge, logger, safc, 34mm flapper, self-ported exh. mani, turbine housing, custom 02 housing external dump, symbroski shift kit, 550cc injectors, walbro 190, maft, jrc fmic, egr block off
Future turbo: evo III 16g

let me know if my calculations are correct or not:
550cc injectors x 4 =2200cc
2200cc x .80 injector duty cycle = 1760cc
1760 x .15 (15% water to fuel ratio) = 264cc

this pretty much lands me right in the middle of my two nozzle sizes. which one would be better suited for my dsm?