You see, that right there is why you should do the breeding: your ideas vs. someone else's
You not only are mixing "general bloodlines," but you are selecting particular individuals, you are putting your own unique stamp on that breeding (for better or worse). Your idea is to match your hard-training male to a long-winded bitch, and this may yield far different results from "someone else's" reasons for mating their individual animals.
I am actually a living example of this
When I was going to breed my own Hollingsworth's Miss Trinx to Mason's Ch Hammer (which produced Poncho, Missy, and Ruby), "everyone" told me that I shouldn't do the breeding, because (they said) Ch Hammer "couldn't produce." Yet, when I thought about how game Ch Hammer was, and that he came from an all-game litter (where his brother Jesse 2xW died crawling for #3 at 2:10) ... and then I thought about how game the Hollingsworth dogs were "in general," and the individuals in the Sabre/Lady In Red breeding in particular, I ignored the bad advice "everybody" gave me ... and made the breeding anyway ... based on MY OWN ideas and beliefs ... and, as it turned out, that was the single most important and far-reaching breeding I ever made ... and now, 20+ years later, there are more Champions and winners down from the 3 dogs "I" produced from that breeding than there are from all the breedings "everyone" (who told me not to) have ever done, put together.
So the moral is simply this: do your own thing and make your own choices. Period.
Jack