I am looking to build a high intelligence energy weapon user who is also interested in robotics and such I also want to have a high charisma and speaking skill to make him pretty much a smooth well spoken scientist interested in high end technology. I was wondering what a good build would be to acomplish this. I am not looking to have him use the large energy weapons mainly just the pistol and rifle weapons.

I've got a build like this except he's not well spoken, he's downright unhinged. 10 int, >5 perception, whatever else with the rest. Tag Science, Energy Weapons, and Speech.

Mine is actually
S 4
P 6
E 5
C 4
I 10
A 5
L 6
With Science, Energy Weapons, Medicine. If you take speech instead of medicine, badabingo.

If it spits electrons or photons, it is an Energy Weapon so size does not matter.

Your build is already described. Tag Speech, Energy Weapons and Robotics and crank up the Charisma and Intelligence at the expense of Agility, Strength and or Luck. Although Agility effects Speed so maybe crank down the Perception instead. Some Energy Weapons, the larger ones, require more strength. Not sure what Traits to use, but the list is pretty straightforward on what they do.

Also, see this

http://www.gamesas.com/index.php?/topic/1130751-lets-create-a-perfect-energy-weapons-build/

Remember the weapon handling perk
Lowes str requirement by 2 and power armor raises your str by 2. Personally I like going 5 str getting the +1 implant And weapon handling

NEVER start out with a "10" in any SPECIAL - there are ways in game to raise stats!!!!

There is only one way to raise SPECIAL stats in New Vegas. It can only raise it one point, can only raise as many stats as you have endurance, and it costs 4000 caps per. And stat points aren't retroactive.

Don't go into New Vegas expecting Fallout 3.

2?

Intense Training and Implants.

I think its in everyone's best interest if we just forget IT exists.

Why?

imho it for your first perk is pretty essential as all the others are kind of meh (lvl 2)