A couple of weeks is not going to make any difference. Not if you tell them all in advance. And there are advantage.
1 less chance of slipping over and injuring yourself
2 less chance of smacking up the van or having some idiot do it for you.
3 Drain the system and forget about it
4 catch up with paperwork, ordering leaflets , writing letters, going through your customer list to see who can be put up etc
5 for what you will earn is it worth the hassle? really?