Sounds good Woldan.
If the powder is an intermediate burning powder, it might work just fine with LR primers. I have no experience with that particular powder. Hornady dies are very nice. Their expander buttons in the FL die are quite possibly, the best made of any dies. Love them, as I do their seating dies. I am now using 6 different sets (calibres) of Hornady dies.
Your seating depth sounds just great.
At .375H&H velocities of the usual 2,450fps to 2,560fps, the PPU bullets will likely work just fine. They looks very similar to the Hornady 300gr. RN, except for not having a cannelure.
Best of luck with your new rifle.