One thing to add to the equation is shot count per fill.
I know when we go on day hunts the Last thing i want to deal with is a gun that only gets 25-30 shots per fill, which leads to lugging some form of extra air around.
I know this is out of budget for you, but my favorite hunting rig is my Huben K1 in .22
Set the regulator to 150. and set the power wheel at 22-24, add the 25.4gr or even better the new 28.55gr and you have a stone cold killer semi auto that gets 50 shots on a fill.
You can pick one up used at a decent price if you look...
For glass
I use the Hawke 4-12x40 AO scope with the 30/30 reticle, great clear glass, wide FOV, light weight, and cheap ....Look at overstockoptics for a deal...Hawke part # 14140, look it up on his site, click on it, then click the X button to get out of the screen, a pop up will come up on screen asking you to make an offer, throw one out there and he will respond within an hour in most cases... I have bought some high end scopes Very cheap from him...