How viable is Volt for mid to late game?

I'm only like 4 days in to Warframe. Picked Excalibur to start, quickly regretted it, despite loving melee, because I adore speed, and wanted Volt bad. I joined a guild, and raced through the star chart to be able to build Volt. Finally, he's in progress and on his way.

I'm just curious if I've built him up too much in my mind. I only have Excaliber still.