In the last year I've only folded it about 4 times to stuff it into a car, I do fold down the pedals to wheel it into the office pretty often.

It is a heavy bastard. It's foldable so I figured I could take it on the subway but it's so heavy that it's not practical to carry up stairs, there also isn't really a good carrying handle and you end up picking it up by the pinch points. I wish I went with something a bit lighter. As a work around, I bought a second charger and motorcycle PPE, i just use PAS 4 both ways and let it charge at work. My 20 minute drive is a 25 minute bike ride and when traffic is bad it's still a 25 minute ride. Going that fast means the suspension post is a must, sometimes you don't see the potholes in time to stand and it HURTS.

I bought this post and attached it to the stock seat: https://a.co/d/d5sUw8X Don't pick up the bike by the seat, it will eventually pop out the rubber seal on the suspension post. I don't remember what size it was.

For the brake pads I have these: https://a.co/d/4Sm9TkM They seem ok, they get plenty of bite, I'll probably have to replace the rotors eventually, I'm not convinced the stock rotors are meant for semi metallic. A local bike shop will have this size on hand but they might be like $45 per pair.

Use your legs to support more weight, especially over bumps and drops.

I use a Cane Creek Thudbuster LT4 on my hardtail MTB if you're looking for a nice suspension seatpost. Just make sure you get the suspension medium rated for your weight.

If you're looking for saddles, I like the Brooks b67 (I use this with my folding bike and a regular seatpost) and b17 (I use this on my hardtail MTB with the Cane Creek LT4).

There really isn't much clearance there and with uneven wear the caliper kept getting closer to the spokes every time I centered the rotor to the point where it starts rubbing. Honestly this seems really bad if it gets snagged on a spoke at high speed.