mercier killo tt

Should I buy a road bike or build up my old Mercier Kilo TT?

Lately, I have been stuck on building my wheels and as soon as I am done with that I want to either buy a road bike or build my old Kilo.

I thought about rebuilding my Kilo to be another beater bike or a racing bike, but I would like to have a road bike and be able to go farther/ faster. Buying an entire road bike will be costly, but so will building my Kilo with a new crank set and wheels. I could use some of my older parts and use it, but I would like a road bike for training and commuting purposes.

So, after my wheels are built should I save up for a road bike or piece together my old Mercier Kilo TT?