For close quarters hunting like you'll be doing I'd personally go with a .308 for a number of reasons. The gun will typically be shorter and lighter than a .270 making stand hunting easier and there is less recoil even with the lighter gun. Also you can go with heavier projectiles when going after the hogs (typically up to 168gr with the slower 1 in 12" twist of a .308Win barrel) or around 150 for deer...your preference.
As far as optics go, to have a good field of view, good clarity and light transmission and something that will last as long as the rifle and have a warranty worth a crap something like the Leupold Rifleman series for around $200 would be a minimum starting point. Most people spend more on the optics than the rifle (unless it is a custom piece) as most rifles are "accurate enough" but poor optics can make an otherwise good rifle shoot like crap. Along those lines I have seen too many lower end scopes like Swift, Burris, Simmons etc fail miserably- like the reticle falling off it's internal mount and be 45 degrees off square or the objective bell snap off when slightly bumped. This can wind up costing you more in the long run.
"Shoot low boys...they're riding shetland ponies in search of true grit" Lewis Grizzard