I assume a 5 gallon batch...?? Are you going to drink 50+ bottles in a few days, waste beer, even if it is swill, by dumping it out, or let your beer get better by waiting for a few days for the bottles that you already paid for???
You don't HAVE to bottle by any schedule. It is often better to wait longer. I have left beer in primary for around 6 weeks and those have turned out some of my best.
Wait for your bottles to arrive.
When you need more bottles, commercial bottles are fine if they are pry off caps. A good portion of my bottles are Sam Adams bottles.