Starter Kill - need your opinion

Hello. This is my 1st post. My friend ask me to do a starter kill fir him car. With very usefull information from thim site, so i draw some diagram of starter kill with some features. I think, it will work like this; 1. when door is open switch is close, it will activate relay4 at moment. 2. Then it will ativate relay1 & 2 that will cut wire to starter motor. 3. If he not push disable switch & turn key to start then he will be activate relay3 & 6 where horn will make sound till he disable it by pushing disable switch or by remote lock. I dont know if this will work well like i think because never play with bunch of relay like this. I do like to all member give opinion and suggest me what the best relay or electronic components will work well in this diagram. Thanks.