I'm looking to build a sub 400 yd load for elk with sub 100 yds often encountered where i hunt. I've got a Howa Alpine 7mm08 20" bbl. Which would you guys go with?

150 or 162 eldx/m?
140 or 160 nab?
140 or 150 npt?
139 or 145 lrx?

I guess I'm worried about velocity from such a short barrel.