I would recommend the Herpstat 2 at a minimum. Chances are you are going to end up with a second heat source or a second BP before too long. The Herpstat 2 is only $56 more than the Herpstat 1 ($195 vs $139).
I bought a Herpstat 1 for my first BP and shortly thereafter realized I needed to add a CHE (which ended up going on a Jumpstart). Recently, we purchased our second BP and I decided to expect the inevitable and purchased a Herpstat 6.
I tend to agree. I would consider a 2 the minimum. I bet you could call them and swap it out.
1.0 Lesser Mojave Ball Python "Neptune"; 1.0 Western Hognose "Murray"
Lizards:
1.0 Bearded Dragon "Nigel"
Tarantulas: 0.1 G. Rosea "Charlotte"; 0.1 B. Albopilosum "Matilda"; 0.1 C. Versicolor "Bijou"; 1.0 B. Boehmei "Lightening McQueen"