Hello,Could you please help me to put this sentence right? 
A manager of a company invites me for a visit and suggests that I come with my colleague, so in my email I need to confirm that we will arrive together. Which sentence will be correct:
1. We will arrive with XXX to (name of company) at 3pm.
2. I will arrive with XXX to (name of company)at 3 pm. 
3. We will arrive together with XXX to (name of company) at 3 pm.
4. I will arrive together with XXX to (name of company) at 3 pm.
The email should sound semi-formal, so would it be appropriate to use the word  �come � instead of  �arrive � in this context?
Thank you