Hahaha, no it is not easy... Yeah, definitely run aromasin for a week-or-two after discontinuing SERM (as they have quite long half-life).
Good thing about aromasin is that E2 returns back to normal relatively quickly, without rebound effect somewhere between 4 and 7 day (I think), so if you feel you're overdosing you can reduce dosage, and also you can increase dosage if you feel that E2 is still to high. On top using vit d reduces damage to the bones, so all should be fine.