Right ive got a 5 door converted to RS turbo

Problem 1 is in the morning start the car theres a hell of a lot of white smoke until you drive it! i know its got a big stainless system on it but i wouldnt expect that much is this a possible head gasket?

2. the strut tops ever since i have changed the shocks you can turn the strut tops by hand only changed them yesterday

3. where can i cant a dump valve blanking plug and will the car need to be setup after the plug has been put in, will this also create turbo chatter?

Thanks
Lewis