To be sure, I'm not suggesting that the arrangement is going to fail for you. My point is simply that strength efficiency is reduced (and more efficient arrangements are possible).
I don't mean to pick on you. I continue posting about these things because they're relevant and many might benefit from the information.
Since the nacrabiner thread is huge, we need to be careful how we summarize the info, but after saying all of that, I'm still hanging my 250 lb butt from whoppie slings and nacrabiners made of 7/64 amsteel because I don't think it'll ever matter.
plot I posted is for wire rope.
I requested similar D:d data from several manufacturers of HMPE (Dyneema/Spectra) cordage but all reported that they had not done those tests. One engineer did however suggest that HMPE is likely to be less efficient in D:d strength than wire rope.
In any case, an eye is twice as strong because it has two legs (i.e., a reduction of up to 50% for two lines is no weaker than a single line).