Global Local:
As a US GLEX driver, I have been in similar position (no Slats, CAS: Slat Fault) in Lanseria. We went around (beautiful day) sorted out the checklists and landed. Mysteriously, the slats extended and landing config was normal. In your case, either landing or go-around is appropriate, plenty of runway and the plane would go-around in nearly all cases. I also had a similar problem in the B727, got only inboard flaps extended, I was the wrench--quick Vref correction for the pilots, new card and landed. So, either action worked; I would resist stating either was right or wrong.
All that said, as long as I had no doubts of the go, I would go, sort it all out airborne and make a planned, briefed landing with the non-standard config. Ensures all the possible problems, corrections, etc. are worked out while options exist. Not much to do when the end is coming up fast and something was missed.
GF
Mad Scientist: are you a Bombardier engineer?? PM me, please.