Okay so I like your build it's interesting but there's a couple of things that I wanted to point it with you that is more specific to do with PVE then PVP content. Start at you have fairly too much stamina, your stamina mods are unnecessary the health is enough stamina mods are greatly greatly greatly useless unless they are you know helping you get past a certain threshold with destructive.

My only real recommendation for your build at this point is to find firearms mods that do skill power if you're interested in skill power that being said I feel like you were building good and it has a lot of good slots for it however I don't know how I personally feel about running an auger do not like augs personally. However the point that I'm going to make here is that your build is decent however if you're running specifically solo content then basically how things kind of turnout is that stamina doesn't really equal out to as much as you can get with Firearms or Electronics so basically what I would suggest to you is the following.

Firstly invest in either stamina mods that gives skill haste so that you can get your skills back faster, or invest in firearms mods with skill haste because you want to be able to do damage on your own as well as get your skills back, by the look of your bill you're trying to get your skills back skill haste eventually caps at 45% however I feel like if you got more Firearms or Electronics mods that fit into where your stamina mods currently are you'll see that you'll get your skills back much quicker to allow you to do more damage. Also this would allow you to run booster shot with vigorous and the reason why you were doing that as for obviously the damage mitigation which as you get kills with your gun you have a determined buff so it allows you to get it back much more often and it's great for sustainability and solo contest which is very good.

So in short my only suggestion for your build is to get skill haste mods that center around Electronics or firearm and then pump up your Firearms to something close to 56 and then get your electronics a little higher may be up to something like five don't worry so much about standing up, can be supplemented with the help rolls on your various pieces that you have such as your backpack and your chest piece.