Advice Best Border Crossings from Montenegro to Bosnia?

Planning a road trip from Ostrog Monastery to Mostar, Bosnia in late June and looking for advice on the best border crossings. I've heard some crossings can be quite busy, and I'm hoping to avoid long waits. Does anyone have experience with this route? Any tips on which crossings to use or avoid, and what to expect in terms of wait times or road conditions? Also, if there are any scenic stops along the way, I'd love to hear about them!