https://hennessyhammock.com/
Comes with its own built in rain fly.
As for getting in and out nothing could be simpler.
One end is velcro'd. Open it up, back into it, sit down, lift your legs, set them slightly on the right and the weight snaps the velcro together locking you in.
Getting up, seperate your feet, dig your heels in a little and seperate, velcro opens. drop your feet through stand up and walk out.
But don't take my word for it. Do some research. They are very comfortable.
I have yet to mess with mine in cool weather. So no underquilts or things like that.
I do have a couple of folding sleeping bag pads that are semi rigid and fairly warm. Combine with a decent bag and I don't think cold would be a problem until you got down near or below freezing. Then some adjustments might have to be made.
I sprung for the snake skins for our 2 just to make it simple to put up and take down. Well worth the money IMO.
Turns a big ungainly lump of hammock and rain fly into 2 nice long smooth "snakes" which are a breeze to coil up and restore to the original stuff sack.