You don't say what lvl you are now but for a new player without any rich alts the best time to respec would be at 22 if you have one so you can save money by selling any old enhancements you have. If you don't have a free respec then 24 is your first opportunity to do the respec trial and change your toon. Don't panic though CJ is a perfectly fine power even if you dont want leaping pool for the long run. You won't have gimped your character and i'd recommend waiting, respecs can be hard to come by.
For an AR/Dev you get cloaking device in the secondary, so no need to get stealth (think CD has the benefit of not having a speed penalty but i'm not sure). I'm not even sure if you can run both at once but i might be wrong, alot of stealth powers dont stack. Superspeed does though so personally i'd go for hasten and SS as a travel power to stack with cloaking device to make you invisible. You might want to drop the grenade in a respec at some point, i've not heard good things about it though if it works for you then fire away.
Basically just take what fits your concept, the best way to judge a power is to try it after all. You cant really "gimp" yourself unless you take lots of pointless pool powers. Try to get a travel power in at 14 and stamina at 20 as AR is not end friendly would be my advice.
Welcome to CoH, you can check out any time you like, but you can never leave.
I miss him in the weeping of the rain;
I want him at the shrinking of the tide;
The old snows melt from every mountain-side,
And last year's leaves are smoke in every lane;
But last year's bitter loving must remain
~Edna St. Vincent Millay
I'm a new player and my character is a blaster. Primary power is assault rifle and reserve power is traps.
Selected Burst, Slug, Buckshot and Grenades from [censored], Web Grenade from Traps, and I picked Jumping as the other powerset and I have Combat Jumping.
The problem is that I reckon Stealth would have complemented my powerset better than jumping, so should I perservere or respec at level 14.
Any other advice on how to develop the build is appreciated. I know these powersets aren't necessarily the best blaster powersets but I'm trying to tailor it to a concept. I want it to be as effective as possible.
Please?