Thank you for your service! I'd probably just buy points and hunt deer and elk on a general tag on the west side or up towards MT. Hood.
But here are a couple other ideas for deer. If here in mid-Sept, you can get a W High Cascades deer tag, 100% draw usually, hunt the Santiam unit, if you do not harvest, it becomes a W OR general deer tag starting 10/1. There are deer in places in the high cascades, but I would not recommend it as a see a bunch of deer hi success hunt unless scouted/guided. White River (70% ish ) and Hood Units (100%) are options too, 10/1 openers. Upper Deschutes, by Sisters, about 2 1/2 hours one way, 91% draw and you will see deer. There are others, but those come to mind.
For elk, you have general coast, general cascade and a general Rocky Mt seasons around Mt. Hood, all with in range. You might check military tag options in WA, there has been some good elk hunts around MT. St. Helens historically. But buy an OR point.
Since you will be out here, may want to consider the new Premium Hunts, deer and elk are with in your range, not antelope. No points, but someone has to draw.
Good luck!