Trying to buy two RO at once - additive to AP House profile or no?

[kaelao]

Currently have a Blue Diver in my collection and looking to add to it over the next year. My father in law is keen on a 15510ST and so am I (but could be open to a 15450ST as well given my small wrist size).

My question to experienced members out there whether buying an additional piece on behalf of my father in law will be additive to my profile with my AP House or will actually be more difficult if have both watches added to my wish list? My AD has made it clear she can make 15510ST / 15450ST happen for me over the next year with sufficient notice and will be easier for white / black / grey.