I can't speak to that exact program, can't remember if I tried it, but I'll give you some general things to look for...
I was experimenting with all the open source NLEs I could find a while ago, and one major thing that many are missing is the ability to have multiple audio tracks. If you need to layer a second track to hide audio cuts better, it's a necessity. The other item that's important for smooth audio are the fade types the program supports, and the way they can be aligned.
It should have an exponential fade (fade to silence and then back out), and a constant-power fade (where the volume never gets quieter, it fades out the audio from the left track and fades in the audio from the right keeping the volume consistent throughout). Being able to shift fades to the left and right isn't utterly necessary but it makes L/J cuts a lot easier than having to recut the underlying audio an extra time or two and reapply the audio transition.
The quality options and size of the output are also crucial, if it doesn't give you granular controls you might get huge files, bad encoding, or formats you don't want, so do some tests ahead of time to make sure files will come out the size and quality you expect in the file type you want.
You also allude to realigning audio, you shouldn't have to do that - in Premiere for instance you have something called a ripple delete where if there's a gap you can "delete" that gap in the sequence and all the tracks shift together. If you have to do that manually for each track you're going to have a bad time. It's a feature most NLE should support, but if yours doesn't then definitely find an alternative.
Unfortunately most NLEs are not compatible with each other format wise, even export formats for the projects. There are a couple that export XML that's somewhat similar, but not identical, so once you pick an NLE don't expect to be able to move a project to a different one. I provide some tools for going from Premiere Pro to Davinci Resolve, but even that import isn't perfect, although it does give you a fairly decent recreation of the project. But for the most part the compatibility between NLEs is terrible, so take some time and choose a good quality one so you don't have to switch.