80w from reptile basics will work good for you.
VE-200 is a good choice, I have a few of them and some ve-300 and I love them all. You can't go wrong with ve or Herpstat IMO. There is 2 models of the 200, the ve-200 and ve-200d they are both proportional so will maintain steady temp. The ve-200 is pulse proportional and can be used with any non light emitting heat source so rhp, flexwatt, uth, che are all ok to use with it. The ve-200d is dimming proportional and can be use with light emitting and non light emitting heat sources. If you think you will use a light as s heat source at some point or just in case you do get the 200d if not the 200.
I've compared the ve-200, ve-200d, and ve-300 to the Herpstat and they are just as accurate. VE and Herpstat are both good choices and will keep your temp you set within a couple of tenths of a degree, sometimes you will see it go 1 degree higher or lower but not often.
Sent from my SAMSUNG-SM-G891A using Tapatalk