That's better Beagle! My flying came on leaps and bounds by doing a spot of touring in the States, and only served to broaden and enhance my experience in a way that would have not been possible in the UK.
Back to the original question, I really don't think a lack of IMC rating affects the CPL training. Remember that for the CPL when flying on instruments there is no navigation required, except a position fix but thats dead easy. The exminer just asks for different rates of climb, speeds, headings etc, but no tracking so it doesn't take long to get up to speed.
I only had 4 hours instrument flying when I turned up for my CPL and that was several years earlier, but it really wasn't a problem. Hopefully if you're going commercial you'll have a certain aptitude and ability to learn so you'll pick it all up...