Incall is usually best for daytime dates (just for me, IMO). Often, outcalls in the evening, especially if your rates are on the higher side... Many a traveling fellow would like to have company at his hotel..
There are always exceptions, and some will always prefer INs and others always OUTs. Bee patient, girl. You are new. Austin is a busy town, with lots of ladies of all varieties and types. So, you may need more than a 2 day stay to be very profitable.... who knows?
I look at profile.. But first thing you see are the looks.. Then reviews reviews reviews.... I base 99.3% of my choice on a few very trusted reviewers .....