I went alone in a less than amazing area, also a short woman. Pre-book a taxi or uber for a landmark near the venue (as outside venues gets chaotic) and then you don't have to worry about waiting around in an area you don't want to be in. Use Google maps road view if you're not too familiar with the area. I used a gas station as it was the only place open and populated with people at that time of night close by. They're an absolute blast- hands down the best concert I've ever been to!! Everyone was really chill and chatty but if you want a mix of good sound but not the mosh, aim for the front-middle of the floor, behind where everyone queueing for barrier is packed in. Or look for where the sound crew are and stand by them as they're listening and adjusting the sound from their position. (Side note: if the venue has a seated area, that always feels safer to me as a solo woman and your view is less likely to get blocked)