Bow Hitch.
Google it. Super simple, no need to remove the sight for installation, and lets you rest bow hands-free in a natural position that lends itself to easy/quick aiming of the bow. Highly recommended after using it on several western and backcountry hunts.
My then-13 year old son shot his first oryx last year with a 6.5CM, 142 grain ABLR, from 250 yards. He placed it right into the shoulder, it broke through bone, continued through the heart, went through the meaty part of the far shoulder, and piled up in the inside of the hide on the far side...
After you get proficient with shooting, I would recommend taking a Joel Turner ShotIQ class, in person at a bow range. Next best thing would be to take his class online.
I use a 142 grain Nosler ABLR. Definitely a lot of bullet for antelope, but it's what I use for other species. Consistent performance, dope, etc. takes a lot of stress out of hunts.
Lots of good advice above but, for another handy reference, I've learned a lot about euro mounts and restoring deadheads from Whitebone Creations videos on YouTube.
I've switched to a Grim Reaper Micro Hades Pro, 125 grain fixed blade for this season. Shoots where my field points are hitting at 50 yards. Haven't tried stretching it out beyond that, but I don't plan to release an arrow at a critter beyond that range.