An opener install looks straightforward on video: hang the unit, bolt the rail, wire the wall button. What trips people up is the stuff that doesn't show - setting the travel limits so the door doesn't slam the floor or stall short, and getting the safety reverse to actually reverse before the door touches anything.
Mead sits in a cold-climate zone with severe winter conditions, and that changes what you want in the opener itself, not just the install. Cold snaps are hard on belt-drive units that aren't rated for it, and a battery backup is worth having if winter storms knock out power while the door's down. Those are decisions worth making before you buy the unit, not after it's on the ceiling.
We'll say plainly: a lot of DIY installs work fine. Where we see trouble is wiring the safety sensors low enough and square enough that they actually trip, and getting the spring tension on the door itself right before the opener ever gets tested against it. If the existing door hardware predates the opener swap, that's the part we'd want to check first.