Hi eric and welcome.
I haven`t stayed at Sabai Lodge but know the location
you`ll get around easy enough from there,no worries.
Some bars very close by anyway.
The areas you`ve described(Walking Street,sois 6,7&8) are probably the most popular,all good for a first trip, and I would make you right as to soi6 being a good daytime place.
Plenty more out there just depends on how much time you have.
Try to visit as many different places as possible
see what you enjoy most.
