RV14 plans section 30-08 (step 5) rivet help

Hey y'all,

I'm having trouble setting two rivets on either side of the fuse/tail seam (so 4 total) that you do in step 5 of section 30-08. I'm wondering if it would be acceptable to use a MK319BS rivet or to upsize these holes to #30 and put a CherryMax rivet in there. I'm attaching a screenshot of the plans page and I have circled the rivets in question in red.



Thanks in advance!

IIRC, we bucked these using a 12-inch back riveting set with a second bucking bar across the top to add mass. Suspect your approach is fine, too, but the question is above my pay grade.