I think the boot is overkill for 30-pound pack and regular backpacking, even off-trail travel. The only reason I can see for this boot is if you are going to do a lot of snow travel or are a really big guy (200 lb+) and have had experience with lighter boots breaking down. I quit using large leather boots over 10years ago. I would get some light hikers or sturdy trail running shoes and try them first. I know the idea of a boot that will "last forever" is tempting - but all that stiffness and weight will make every step and mile more difficult. The boot that you show is more of a mountaineering boot than a backpack boot. Save it for mountaineering!

Also, please give more details on what you mean by extened trips. Extended trips and 30 pound pack seem contridictory to me.