Timings

I think the gap between meals is ok as long as you make it clear what food is being served when (you wouldn't want guests turning up at 3.30 assuming they will be sitting straight down to a large meal) but three and a half hours seems a very long time to spend just having drinks and nibbles - do you have anything else planned to fill this time?

We are having a very informal wedding and a bit different to usual. We have sent out invites but I’m wondering if my timings sound okay.
2pm private ceremony (20 guests)3.30 reception drinks and nibbles (mini pasties and scones) (60 guests) 7pm buffet dinner (100 guests)

I see there is also 1.5 hour gap between the ceremony for 20 and the 3.30pm extra 40 guests arriving. So the 20 for the ceremony will be having a longer wait, mini pasties and scones sound better to keep people going rather than the usual canapé though