YOu could look into the fermzilla and fermzilla all rounder as they may be up your alley if you plan to keg. Honestly though, the bucket leaking around the lid isn't a "Huge" deal since you can see through it to an extent.
As for the keg and how long... If you slow carb (which I recommend) then you should be ready to drink after 5 days. There are lots of ways to help it carb faster in the keg. You can look them up.
- One thing I typically do is hit it with 25-30 psi to seal the lid of the keg and then I let it sit at that psi overnight and then reduce it to serving psi. That might shave a day or two off the carb time. - Don't forget it though or you'll have overcarbed beer