Will I regret this Macbook purchase?

Alright, so here's my situation. I've been using custom built PC desktops for years and I'm happy with them, and want to continue to use them as my main editing rig. Current set up is a 5900x, 4090, 64gb ram, for reference.

The issue is I live in an area with a bit of a temperamental power grid, and I've had a few issues with my power going out at key moments with client deliveries. So I'm looking for a nice workable backup in a pinch. Portability and good battery life is key. I know PC laptops are cheaper, but the heat throttling, battery life, and crappy screens are a turn off.

As much as I'd love one of the spec'd out monster Macbooks, I can't justify the cost right now. I was eyeing the base 14" M4 with 16gb of ram and a 512GB SSD for $1450. I know ideally I'd have more ram and more storage, but I edit off portable SSDs, and really just need something will get through standard corporate videos. 4K, broll, light motion graphics.

It sounds like it should be well up to the task as long as I don't go crazy with After Effects comps, but will I regret going the cheaper route?