Give him your 6. Turn on WEP if you need to. Let him dive for you. As he draws nearer, gradually nose down building speed. When he hits 1000 pull to near black-out.
Against a pilot with experience.. BOOM, you're dead.
Bosco, if he pulls out of his dive level and you have time, you must turn into him, he is going to certainly commit to the HO which gives you the initiative for the next move if not the E gain immediate advantage. After the HO, you could simply nose down and leave if you wanted to. You can watch his next move to make a decision.
If he goes up, you have to decide if you want to fight a better turner who is also on top of you... a tough spot. Getting a nik to overshoot is easy, but you have to stay oult of his gun solution in the process.. tricky if your nik pilot is experienced.... luckily, there are few of those.
If he breaks hard but not in the vert, it tells you that you have a rookie pilot and that you can convert the fight to vert, and take him from there.
If, for some insane reason, he goes down in a split S to get back to you, you can split S as well and your slower plane will allow you a canopy shot as he goes under you. If you miss, you could decide to stay nose down and simply leave.
Don't let a better turning plane dictate the fight to your faster plane.