hey i have several questions. as of right now, i have a diamond audio D6 600.4 amp. i am currently using the 600.4 to power my front component and 10" sub. im planning to add a diamond D6 1500.1 amp to power the sub. If i get the 1500.1, ill be using the 600.4 amp to power my front components only. i was wondering if it would be safe to stick with my 4g wires. my sub is wired at 4ohm and at 4ohm the 1500.1 puts out 375rms. the 600.4 will be putting out 150rms. so thats 525rms total. so it would definitly be safe to use 4g for right?