well for what your doing the red dot scopes should be fine, most have the ability to adjust for brightness, and many these days have different colors to pick from

the lower the power the wider the field of view, makes for faster on target, but many 3x9 scopes can be had cheap these days, and with practice you can get on game pretty fast with a 3 x setting, and can get a scope with a lighted reticle to help on speed too, and then have the ability to go to higher power for more precice shooting farther out
many red dot scopes are not all that lighter, sure some are, but not all
one advantage a red dot will have besides the wider field of view will be ability to see in lower light
more power (and glass quality) can me loss of light as power goes up
so most red dots being low power, means they can see better in lower light, and the big Dot makes getting on target faster
but with prsctice, its not a Huge difference on speeds
but get every second can count on thngs that can move
3/4 inch groups are not bad, many guns thats all they are good for, so
finding or getting better may or may not be possibletrying different loads can sure help find a sweet one
but these days with ammo being so darn hard or expensive might be just as happy with the 3/4 inch group if it was me!