The bubbles on the control box were clear 5mm LEDs. The MPP flash tube and Exactra strip are pricy, rare items and inaccurate for this saber.
You could probably find an Anakin AOTC Force-FX with broken electronics or other imperfections pretty cheap on eBay or from a board member, but it is oversized. However, I think the greeblies would work just fine.
It (the original, that is) is actually one of the smallest of the lightsabers. Smaller than an MPP flash. I think only Yoda's is smaller.
There are several board members who I think could build this saber for you. The replica by Master Replicas is very heavy and unsuitable for costuming.
The member lgtsbr used to sell the grips when he had a web store, but it has been closed for over a year. I am sure that I saw that someone bought his remaining stock of grips and sold them from his web site, but I don't remember who and I can not find it.