It seems a little odd to me. If you have lots of eggs that become blasties and miscarriage is your issue there may be other alternatives. There are certainly women on this site that can help out with advice on that. Maybe try putting this same post out on the long term IVF warriors post...if you have been trying since you were 33, I'd say you qualify and good on you, for persisting!
There are lots of things that people talk about to improve egg quality but they are variable and seem to work for some women and then not others who are in a similar position.
You could try acupuncture pre and post transfer but that's meant to be mainly to help implantation and your problem seems further down the track.
Perhaps ask your FS why he went to the trouble of finding you a donor? Ultimately, if it does turn out that's your best chance then grab it because your FS has done the hard work for you unless you have another person in mind you'd prefer.
Best of luck with very hating,