I’m planning to go full strength, just the required amount of Dex.
First - you should take multishot instad of oblique shot r5 cost too much mana, r1 is good enough.
Second - high anchoring is in my opinion “a shitty skill not worthy of 1 point” take barrage instead.
Musketeer is specialy good for pvp, not so much in pve, since you’ve also taken scout i guess that your build is a PVP one.
In that case, do not go full STR, or you wont hit ■■■■ ^^ go 4:1 or maybe even 8:3
I understand your point about multishot and barrage. I realized that after making the build, will make changes.
Could you explain to me what Steady Shot does? It is true that I’m thinking of PvP oriented build. Took one level of scout just for the cloaking ability.
Sure, now that I know PvP requires more Dex, I’ll go with 4:1 or 8:3.
You mean steady Aim ?
It’s a buff that increase your attack (45% at r15) pretty hugh buff 
Scout’s camo can be really useful in PvP.
You can block any kind of physical attack for few times. Even energy blast or snipe.
sapper need to go at least c2 all c1 skill is not good enough.
i bet you think that you will Cloaking and set up your trap and conceal it. but that too long for pvp thing btw you have Headshot/Snipe to onehit target when your cloaking.
so i suggest take it out and have falconer or ar2 instead.