I would definitely do the IUI on Wednesday. But also BD on Tuesday. I read the plan about taking a break to make sure the IUI boys are healthy but if DH has no issues, I wouldn't take the chance. I honestly think it's about timing but getting as many boys there as possible is better. So yeah, if DH doesn't have and issues, BD.
I agree. I really think the key is to have TONS AND TONS of bd! With my bfp cycle I had a + opk for 3 days in a row. It was crazy!